# Selected Archival Publications

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Tam, H. K, Lap-Mou Tam, L. M., **Ghajar, A. J.**, and Wang, Q., “Experimental Investigation of the Heat Transfer in a Horizontal Mini-Tube with Three Different Inlet Configurations,” * Proceedings of the 2^{nd} Thermal and Fluid Engineering Conference (TFEC2017) and 4^{th} International Workshop on Heat Transfer Advances for Energy Conservation and Pollution Control (IWHT2017)*, Las Vegas, Nevada (USA), April 2‑5, 2017.

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Tam, H. K., Tam, L. M., **Ghajar, A. J.**, and Chen, I. P., “Experimental Study of the Ultrasonic Effect on Heat Transfer inside a Horizontal Mini-Tube in the Laminar Region,” * Applied Thermal Engineering*, Vol. 114, pp. 1300-1308, 2017.

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Bhagwat, S. M. and **Ghajar, A. J.**, “Experimental Investigation of Non-Boiling Gas-Liquid Two Phase Flow in Upward Inclined Pipes,” * Experimental Thermal and Fluid Science,* Vol. 79, pp. 301-318, 2016.

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Elbing, B. R., Still, A. L., and **Ghajar, A. J.**, “Review of Bubble Column Reactors with Vibration,” * Industrial & Engineering Chemistry Research*, Vol. 55, pp. 385-403, 2016.

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Bhagwat, S. M. and **Ghajar, A. J.**, “Effect of Pipe Surface Roughness on Frictional Pressure Drop in Gas-Liquid Two Phase Flows,” * Proceedings of the 12^{th} International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics (HEFAT2016)*, Malaga, Costa del Sol, Spain, July 11-13, 2016.

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Bhagwat, S. M. and **Ghajar, A. J.**, “Measurements of Void Fraction, Pressure Drop and Heat Transfer in Horizontal and Downward Inclined Gas-Liquid Stratified Flow,” * Proceedings of 9^{th} International Conference on Multiphase Flow (ICMF-2016)*, Florence, Italy, May 22‑27, 2016.

**[PDF]****Ghajar, A. J.** and Bhagwat, S. M., “Modified Liquid Entrainment Fraction Correlation for Varying Pipe Orientations and System Pressures,” * International Journal of Multiphase Flow,* Vol. 74, pp.1–4, 2015.

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Bhagwat, S. M. and **Ghajar, A. J.**, “An Empirical Model to Predict the Transition between Stratified and Non-Stratified Gas-Liquid Two Phase Flow in Horizontal and Downward Inclined Pipes”, * Heat Transfer Engineering*, Vol. 36, No. 18, pp. 1485-1494, 2015.

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Tam, H. K., Tam, L. M., **Ghajar, A. J.,** Kuok, C. F., and Sun, C., “Experimental Investigation for the Forced and Mixed Convection Heat Transfer inside the Macro- and Mini-tubes,” * Proceedings of 3rd International Workshop on Heat Transfer Advances for Energy Conservation and Pollution Control (IWHT2015)*, Taipei, Taiwan, October 16‑19, 2015.

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Tam, H. K., Tam, L. M., **Ghajar, A. J.,** and Chen, I. P., “Experimental Study of Ultrasonic Effect on Heat Transfer Inside a Horizontal Mini-Tube in the Laminar Region,” * Proceedings of 3rd International Workshop on Heat Transfer Advances for Energy Conservation and Pollution Control (IWHT2015)*, Taipei, Taiwan, October 16‑19, 2015.

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Korivi, R. N. K., Bhagwat, S. M. and **Ghajar, A. J.**, “Heat Transfer Measurements and Correlations Assessment for Upward Inclined Gas-Liquid Two Phase Flow,” * Proceedings of the 1st Thermal and Fluid Engineering Summer Conference, TFESC*, New York City, New York, August 9-12, 2015.

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John, T. J., Bhagwat, S. M. and **Ghajar, A. J.**, “Heat Transfer Measurements and Correlations Assessment for Downward Inclined Gas-Liquid Two-Phase Flow,” * Proceedings of the 1st Thermal and Fluid Engineering Summer Conference, TFESC*, New York City, New York, August 9-12, 2015.

**[PDF]****Ghajar, A. J.** and Bhagwat, S. M., “Non-Boiling Gas-Liquid Two Phase Flow Phenomenon in Near Horizontal Upward and Downward Inclined Pipe Orientations,” World Academy of Science, Engineering and Technology, * International Journal of Mechanical, Aerospace, Industrial and Mechatronics Engineering,* Vol. 8, No. 6, pp. 1039-1053, 2014.

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Tam, L. M., Tam, H. K., **Ghajar, A. J.**, Ng, W. S., and Wu, C. K., “The Effect of Inner Surface Roughness and Heating on Friction Factor in Horizontal Mini-Tubes,” * Proceedings of the 15th International Heat Transfer Conference, IHTC-15*, Kyoto, Japan. August 10-15, 2014.

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Hossainy, T. A., Bhagwat, S. M., and **Ghajar, A. J.**, “Non-Boiling Heat transfer in Horizontal and Near Horizontal Downward Inclined Gas-Liquid Two Phase Flow,” * Proceedings of the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics (HEFAT2014)*, Orlando, Florida, July 14-16, 2014.

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Kalapatapu, S., Bhagwat, S. M., Oyewole, A. L., and **Ghajar, A. J.**, “Non-Boiling Heat transfer in Horizontal and Near Horizontal Upward Inclined Gas-Liquid Two Phase Flow,” * Proceedings of the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics (HEFAT2014)*, Orlando, Florida, July 14-16, 2014.

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Cai, S., Cremaschi, L. and **Ghajar, A. J.**, “Pipe Insulation Thermal Conductivity under Dry and Wet Condensing Conditions with Moisture Ingress: A Critical Review,” * HVAC&R Research*, Vol. 20, pp. 458-479, 2014.

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Bhagwat, S. M. and **Ghajar, A. J.**, “A Flow Pattern Independent Drift Flux Model Based Void Fraction Correlation for a Wide Range of Gas–Liquid Two Phase Flow,” * International Journal of Multiphase Flow,* Vol. 59, pp.186–205, 2014.

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Tam, H. K., Tam, L. M., **Ghajar, A. J.**, Fu, P. H., and Sun, C., “Correlating Isothermal Friction Factor Data for Micro-fin Tubes Using Logistic Does Response Curve Fitting Method,” * Heat Transfer Engineering*, Vol. 35, No. 11‑12, pp. 996-1006, 2014.

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Still, A. L., **Ghajar, A. J.**, and O’Hern, T. J., “Effect of Amplitude on Mass Transport, Void Fraction and Bubble Size in a Vertically Vibrating Liquid-Gas Bubble Column Reactor*”, Proceedings of the ASME Fluids Engineering Summer Meeting (FEDSM2013)*, Incline Village, Nevada, July 7-11, 2013.

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Tang, C. C., Tiwari, S., and** Ghajar, A. J.**, “Effect of Void Fraction on Pressure Drop in Upward Vertical Two-Phase Gas-Liquid Pipe Flow,” * ASME Journal of Gas Turbines and Power*, Vol. 135, pp. 022901-1- 022901-7, 2013.

**[PDF]****Ghajar, A.J.** and Bhagwat, S. M., “Effect of Void Fraction and Two-Phase Dynamic Viscosity Models on Prediction of Hydrostatic and Frictional Pressure Drop in Vertical Upward Gas-Liquid Two-Phase Flow,” * Heat Transfer Engineering*, Vol. 34, No. 13, pp. 1044-1059, 2013.

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Tam, H. K., Tam, L. M., and **Ghajar, A. J.**, “Effect of Inlet Geometries and Heating on the Entrance and Fully-Developed Friction Factors in the Laminar and Transition Regions of a Horizontal Tube,” * Experimental Thermal and Fluid Science*, Vol. 44, pp. 680-696, 2013 (DOI: 10.1016/j.expthermflusci.2012.09.008).

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Cremaschi, L., Cai, S., Worthington, K. M., and **Ghajar, A. J.**, "Measurements of Pipe Insulation Thermal Conductivity at Below Ambient Temperatures Part 1: Experimental Methodology and Dry Tests", * ASHRAE Transactions*, CH-12-030 (RP-1356), Vol. 118, Part 1, pp. 1061-1076, 2012.

**Winner of the ASHRAE “2012 Poster Presentation Award”.**

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Tam, H. K., Tam, L. M., **Ghajar, A. J.**, Tam, S. C., and Zhang, T., “Experimental Investigation of Heat Transfer, Friction Factor, and Optimal Fin Geometries for the Internally Microfin Tubes in the Transition and Turbulent Regions,” * Journal of Enhanced Heat Transfer*, Vol. 19, No. 5, pp. 457-476, 2012.

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Cai, S., Cremaschi, L., and **Ghajar, A. J.**, “Moisture Accumulation and Its Impact on the Thermal Performance of Pipe Insulation for Chilled Water Pipes in High Performance Buildings”, __Proceedings of the 2nd __* International High Performance Buildings Conference at Purdue*, West Lafayette, Indiana, July 16-19, 2012.

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Tam, H. K., Tam, L. M., **Ghajar, A. J.**, Sun, C., and Lai, W. K., “Experimental Investigation of Single-Phase Heat Transfer in a Horizontal Micro-Fin Tube with Three Different Inlet Configuration”, * Proceedings of the ASME 2012 Summer Heat Transfer Conference (HT2012)*, Rio Grande, Puerto Rico, July 8-12, 2012.

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Bhagwat, S. M., Mollamahmutoglu, M., and **Ghajar, A. J.**, “Experimental Investigation and Empirical Analysis of Non-Boiling Gas-Liquid Two Phase Heat Transfer in Vertical Downward Pipe Orientation”, * Proceedings of the ASME 2012 Summer Heat Transfer Conference (HT2012)*, Rio Grande, Puerto Rico, July 8-12, 2012.

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Bhagwat, S. M., Mollamahmutoglu, M., and **Ghajar, A. J.**, “Experimental Investigation and Performance Evaluation of Isothermal Frictional Two Phase Pressure Drop Correlations in Vertical Downward Gas-Liquid Two-Phase Flow”, * Proceedings of the ASME 2012 Summer Heat Transfer Conference (HT2012)*, Rio Grande, Puerto Rico, July 8-12, 2012.

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Bhagwat, S. M. and **Ghajar, A. J.**, “Flow Pattern and Pipe Orientation Independent Semi-Empirical Void Fraction Correlation for a Gas-Liquid Two-Phase Flow Based on the Concept of Drift Flux Model”, * Proceedings of the ASME 2012 Summer Heat Transfer Conference (HT2012)*, Rio Grande, Puerto Rico, July 8-12, 2012.

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Bhagwat, S. M. and **Ghajar, A. J.**, “Similarities and Differences in the Flow Patterns and Void Fraction in Vertical Upward and Downward Two Phase Flow”, Experimental Thermal and Fluid Science, Vol. 39, pp. 213-227, 2012. (DOI:10.1016/j.expthermflusci.2012.01.026)

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Cremaschi, L., Cai, S., Worthington, K. M., and **Ghajar, A. J.**, "Measurements of Pipe Insulation Thermal Conductivity at Below Ambient Temperatures Part 1: Experimental Methodology and Dry Tests", * ASHRAE Transactions*, CH-12-030 (RP-1356), Vol. 118, Part 1, pp. 1061-1076, 2012

**.**

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Tam, H. K., Tam, L. M., **Ghajar, A. J.**, Fu, P. H., and Cheong, S.,“Development of Friction Factor Correlations for Single-phase Flow in Micro-Fin Tube using Logistic Does Curve Fitting Method”, * Proceedings of ISHTEC2012, the 4th International Symposium on Heat Transfer and Energy Conservation*, Paper No. TC02-012, pp. 81-84, Guangzhou, China, January 6-9, 2012.

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Tam, L. M., Tam, H. K., **Ghajar, A. J.**, and Ng, W. S., “Heat Transfer Measurements for a Horizontal Micro-Tube Using Liquid Crystal Thermography”, * Proceedings of ISHTEC2012, the 4th International Symposium on Heat Transfer and Energy Conservation*, Paper No. TC02-007, pp. 62-66, Guangzhou, China, January 6-9, 2012.

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Tam, H.K., Tam, L. M., Tam, S. C., Chio, C. H., **Ghajar, A. J.**, “New Optimization Method, the Algorithms of Changes, for Heat Exchanger Design”, * Chinese Journal of Mechanical Engineering*, Vol. 25, No. 1, pp. 55-62, 2012. (DOI: 10.3901/CJME.2012.01)

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Tam, H. K., Tam, L. M., **Ghajar, A. J.**, Tam, S. C., and Zhang, T., “Use of Algorithms of Changes for Optimal Fin Geometries of the Internally Micro-fin Tubes in the Turbulent Region”, * Proceedings of 2011 International Workshop on Heat Transfer Advances for Energy Conservation and Pollution Control (IWHT2011)*, Xi’an, China, October 17-20, 2011.

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Tam, H. K., Tam, L. M., **Ghajar, A. J.**, Ng, W. S., Wong, I. W., Leong, K. F., and Wu, C. K., “The Effect of Inner Surface Roughness and Heating on Friction Factor in Horizontal Micro-Tubes”, * Proceedings of ASME-JSME-KSME Joint Fluids Engineering Conference 2011(AJK2011-FED)*, Hamamatsu, Shizuoka, Japan, July 24-29, 2011.

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Tam, H. K., Tam, L. M., **Ghajar, A. J.**, Sun, C., and Leung, H. Y., “Experimental Investigation of the Single-Phase Friction Factor and Heat Transfer Inside the Horizontal Internally Micro-Fin Tubes in the Transition Region”, * Proceedings of ASME-JSME-KSME Joint Fluids Engineering Conference 2011(AJK2011-FED)*, Hamamatsu, Shizuoka, Japan, July 24-29, 2011.

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Tam, H. K., Tam, L. M., and **Ghajar, A. J.**, “Heat Transfer Correlation for Two-Phase Flow in Vertical Pipes Using Support Vector Machines”, * Heat Transfer Engineering*, Vol. 32, No. 11-12, pp. 1047-1052, 2011.

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Godbole, P. V., Tang, C. C., **Ghajar, A. J.**, “Comparison of Void Fraction Correlations for Different Flow Patterns in Upward Vertical Two-phase Flow”, * Heat Transfer Engineering*, Vol. 32, No. 10, pp. 843-860, 2011.

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Bhagwat, S.M. and **Ghajar, A.J.**, “Flow Patterns and Void Fraction in Downward Two Phase Flow”, * Proceedings of the ASME Early Career Technical Conference (2011ECTC)*, Fayetteville, Arkansas, March 31-April 2, 2011.

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Tang, C. C. and **Ghajar, A. J.**, “A Mechanistic Heat Transfer Correlation for Non-Boiling Two-Phase Flow in Horizontal, Inclined and Vertical Pipes”, * Proceedings of ASME/JSME 2011(AJTE2011) 8th Thermal Engineering Joint Conference*, Honolulu, Hawaii, March 14-17, 2011.

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Tam, L. M., Tam, H. K. and **Ghajar, A. J.**, “Simultaneous Heat Transfer and Pressure Drop Measurements for a Horizontal Micro-Tube”, * Proceedings of ASME/JSME 2011(AJTE2011) 8th Thermal Engineering Joint Conference*, Honolulu, Hawaii, March 14-17, 2011.

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Tam, H. K., Tam, L. M. and **Ghajar, A. J.**, “Experimental Analysis of the Single-Phase Heat Transfer and Friction Factor inside the Horizontally Micro-Fin Tube”, * Proceedings of ASME/JSME 2011(AJTE2011) 8th Thermal Engineering Joint Conference*, Honolulu, Hawaii, March 14-17, 2011.

**[PDF]****Ghajar, A. J.**, Tam, L. M., Tam, H. K., and Wen, Q., “The Effect of Inner Surface Roughness on Friction Factor in Horizontal Micro-tubes”, * Proceedings of 2nd International Conference on Mechanical and Electronics Engineering (ICMEE 2010)*, Vol. 1, pp. 59-63, Kyoto, Japan, August 1-3, 2010.

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Tam, H. K., Tam, L. M., **Ghajar, A. J.**, and Chu, W. W., “Experimental Analysis of the Single-Phase Heat Transfer and Friction Factor inside the Horizontal Internally Micro-Fin Tube”, * Proceedings of 2nd International Conference on Mechanical and Electronics Engineering (ICMEE 2010)*, Vol. 1, pp. 44-48, Kyoto, Japan, August 1-3, 2010.

**[PDF]****Ghajar, A. J.** and Tang, C. C., “Void Fraction and Flow Patterns of Two-phase Gas-Liquid Flow in Various Pipe Inclinations”, Keynote Paper, __Proceedings of the 7th International Conference on Heat Transfer, Fluid Mechanics, and Thermodynamics (HEFAT 2010)__, pp. 115-129, Antalya, Turkey, July 19-21, 2010.

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Yeunyongkul, P., Sakulchangsatjatai, P., and **Ghajar, A. J.**, “Experimental Investigation of Closed Loop Oscillating Heat Pipe as the Condenser for Vapor Compression Refrigeration”, __Proceedings of the ____13____th__* International Refrigeration and Air Conditioning Conference at Purdue*, Paper # 2102 (8 pages), West Lafayette, Indiana, July 12-15, 2010.

**[PDF]****Ghajar, A. J.** and Tang, C. C., “Importance of Non-Boiling Two-Phase Flow Heat Transfer in Pipes for Industrial Applications”, * Heat Transfer Engineering*, Vol. 31, No. 9, pp. 711-732, 2010.

**[PDF]****Ghajar, A. J.,** Tang, C. C., and Cook, W. L., “Experimental Investigation of Friction Factor in the Transition Region for Water Flow in Minitubes and Microtubes”, * Heat Transfer Engineering*, Vol. 31, No. 8, pp. 646-657, 2010.

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Tang, C. C. and **Ghajar, A. J.**, “A Mechanistic Approach for Heat Transfer Estimation in Horizontal and Vertical Non-Boiling Two-Phase Pipe Flow,” * Chemical Engineering Transactions*, Vol. 18, pp. 123-128, 2009. (DOI: 10.3303/CET0918018)

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Tam, H. K., Tam, L. M., **Ghajar, A. J.**, and Cheong, C. W., “Development of a Unified Flow Regime Map for a Horizontal Pipe with the Support Vector Machines”, * Proceedings of 2nd International Symposium on Computational Mechanics (ISCM II) and 12th International Conference on Enhancement and Promotion of Computational Methods in Engineering and Science (EPMESC XII)*, Hong Kong – Macau, China, November 30-December 3, 2009.

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Tam, H. K., Tam, L. M., **Ghajar, A. J.**, and Lei, C. U., “Comparison of Different Correlating Methods for the Single-Phase Heat Transfer Data in Laminar and Turbulent Flow Regions”, * Proceedings of 2nd International Symposium on Computational Mechanics (ISCM II) and 12th International Conference on Enhancement and Promotion of Computational Methods in Engineering and Science (EPMESC XII)*, Hong Kong – Macau, China, November 30-December 3, 2009

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Tam, L. M., **Ghajar, A. J.**, Tam, H. K., “Contribution Analysis of Dimensionless Variables for Laminar and Turbulent Flow Convection Heat Transfer in a Horizontal Tube Using Artificial Neural Network,” * Heat Transfer Engineering*, Vol. 29, No. 9, pp. 793-804, 2008.

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Tam, L. M., **Ghajar, A. J.**, Tam, H. K., and Tam, S. C., “Development of a Heat Transfer Correlation for the Transitional Flow in a Horizontal Tube using Support Vector Machines,” * Proceedings of the 2008 ASME Summer Heat Transfer Conference*, Jacksonville, Florida, August 10-14, 2008.

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Tam, L. M., **Ghajar, A. J.**, Tam, H. K., and Tam, S. C., “Development of a Flow Regime Map for a Horizontal Pipe with the Multi-Classification Support Vector Machines,” * Proceedings of the 2008 ASME Summer Heat Transfer Conference*, Jacksonville, Florida, August 10-14, 2008.

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Tang, C. C. and **Ghajar, A. J.**, “Validation of a General Heat Transfer Correlation for Non-Boling Two-Phase Flow with Different Flow Patterns and Pipe Inclination Angles,” * Proceedings of the 2007 ASME-JSME Thermal Engineering Summer Heat Transfer Conference*, Vancouver, British Columbia, Canada, July 8-12, 2007.

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Tam, L. M., Tam, H. K., **Ghajar, A. J.**, and Tam, S. C., “Factor Analysis for Forced and Mixed Convection Laminar Heat Transfer in a Horizontal Tube Using Artificial Neural Network,” * Proceedings of the 2007 ASME-JSME Thermal Engineering Summer Heat Transfer Conference*, Vancouver, British Columbia, Canada, July 8-12, 2007.

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Krishnamoorthy, C., Rao, R. P., and **Ghajar, A. J.**, “Single-Phase Heat Transfer in Micro-Tubes: A Critical Review,” * Proceedings of the 2007 ASME-JSME Thermal Engineering Summer Heat Transfer Conference*, Vancouver, British Columbia, Canada, July 8-12, 2007.

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Krishnamoorthy, C. and **Ghajar, A. J.**, “Single-Phase Friction Factor in Micro-Tubes: A Critical Review of Measurements, Instrumentation and Data Reduction Techniques from 1991-2006,” * Proceedings of the 5th International Conference on Nanochannels, Microchannels and Minichannels*, June 18-20, Puebla, Mexico, 2007.

**[PDF]****Ghajar, A. J.** and Tang, C. C., “Heat Transfer Measurements, Flow Pattern Maps and Flow Visualization for Non-Boiling Two-Phase Flow in Horizontal and Slightly Inclined Pipe,”* Heat Transfer Engineering*, Vol. 28, No. 6, pp. 525-540, 2007.

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Woldesemayat, M. A. and **Ghajar, A. J.**, “Comparison of Void Fraction Correlations for Different Flow Patterns in Horizontal and Upward Inclined Pipes,” * International Journal of Multiphase Flow*, Vol. 33, No. 4, pp. 347-370, 2007.

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Tam, H. K., Tam, S. C., **Ghajar, A. J.**, and Tam, L. M., “Factor Analysis of Convective Heat Transfer for a Horizontal Tube in the Turbulent Flow Region Using Artificial Neural Network,” * Proceedings of the International Conference on Computational Methods in Engineering and Science (EPMESC X)*, August 21-23, Sanya, Hainan, China, 2006.

**[PDF]****Ghajar, A. J. **Kim, J., and Tang, C., “Two-phase Flow Heat Transfer Measurements and Correlation for the Entire Flow Map in Horizontal Pipes,” * Proceedings of the Thirteenth International Heat Transfer Conference*, Sydney, Australia, August 13-18, 2006.

**[PDF]****Ghajar, A. J.**, Delahoussaye, R. D., and Al-Matar, H., “Development and Implementation of Interactive/Visual Software for Steady State and Transient Heat Conduction Problems,” * Proceedings of the 2006 American Society of Engineering Education Annular Conference and Exposition*, Chicago, Illinois, June 18-21, 2006.

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Kim, J. and **Ghajar, A. J.**, “A General Heat Transfer Correlation for Non-Boiling Gas-Liquid Flow with Different Flow Patterns in Horizontal Pipes,” * International Journal of Multiphase Flow*, Vol. 32, No. 4, pp. 447-465, 2006.

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Tam, L. M. and **Ghajar, A. J.**, “Transitional Heat Transfer in Plain Horizontal Tubes,” * Heat Transfer Engineering*, Vol. 27, No. 5, pp. 23-38, 2006.

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Kim, J., **Ghajar**, **A. J.**, Tang, C., and Foutch, G. L., “Comparison of Near-Wall Treatment Methods for High Reynolds Number Backward-Facing Step Flow”, * International Journal of Computational Fluid Dynamics*, Vol. 19, No. 7, pp. 493-500, 2005.

**[PDF]****Ghajar, A. J.**, “Non-Boiling Heat Transfer in Gas-Liquid Flow in Pipes – A Tutorial,” * Journal of the Brazilian Society of Mechanical Sciences and Engineering*, Vol. XXVII, No. 1, pp. 46-73, 2005.

**[PDF]****Ghajar, A. J. **and Kim, J., “A Non-Boiling Two-Phase Flow Heat Transfer Correlation for Different Flow Patterns and Pipe Inclination Angles,” * Proceedings of the 2005 ASME Summer Heat Transfer Conference*, San Francisco, California, July 17-22, 2005.

**[PDF]****Ghajar, A. J.**, Delahoussaye, R. D., and Nayak, V. V., “Development and Implementation of Interactive/Visual Software for Simple Aircraft Gas Turbine Design,” * Proceedings of the 2005 American Society of Engineering Education Annular Conference and Exposition*, Portland, Oregon, June 12-15, 2005.

**[PDF]****Ghajar, A. J.**, Tam, L. M., and Tam, S. K., “Improved Heat Transfer Correlation in the Transition Region for a Circular Tube with Three Inlet Configurations Using Artificial Neural Networks,” * Heat Transfer Engineering*, Vol. 25, No. 2, pp. 30-40, 2004.

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Sofyan, Y., **Ghajar, A. J.**, and Gasem, K. A. M., “Multiphase Equilibrium Calculations Using Gibbs Minimization Techniques,” * Industrial & Engineering Chemistry Research*, Vol. 42, No. 16, pp. 3786-3801, 2003.

**[PDF]****Ghajar, A. J.**, Tam, L. M., and Tam, H. K., 2003 “Heat Transfer Correlation for Two Phase Flow in Vertical Pipes Using Artificial Neural Network,” * Proceedings of 2003 ASME International Mechanical Engineering Congress and R&D Expo*, November 15-21, 2003,Washington, D.C.

**[PDF]****Ghajar, A. J.**, Tam, L. M., and Tam, S.C., 2003 “A Simple Heat Transfer Correlation for Three Inlet Configurations Using Artificial Neural Network in the Complex Transition Flow Regime,” * Proceedings of the 2003 ASME Summer Heat Transfer Conference*, July 21-23, 2003, Las Vegas, Nevada.

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Sofyan, Y., **Ghajar, A. J.**, and Gasem, K. A. M., “A Systematic Method to Predict Cloud Point Temperature and Solid Precipitation,” * Petroleum Science and Technology*, Vol. 21, Nos. 3 & 4, pp.409-424, 2003.

**[PDF]****Ghajar, A. J.**, Tam, L. M., and Tam, S. K., “A New Heat Transfer Correlation in the Transition Region for a Horizontal Pipe with a Reentrant Inlet – Using Artificial Neural Network,” Heat Transfer 2002, * Proceedings of the Twelfth International Heat Transfer Conference*, Elsevier, pp. 189-194, 2002.

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Kim, D. and **Ghajar, A. J.**, "Heat Transfer Measurements and Correlations for Air-Water Flow of Different Flow Patterns in a Horizontal Pipe," * Experimental Thermal and Fluid Science*, Vol. 25, No. 8, pp. 659-676, 2002.

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Tam, L. M., **Ghajar, A. J.**, and Pau, C. W., “Compressible Flow Software for Properties Calculations and Airfoil Analysis,” * Proceedings of the Eighth International Conference of Enhancement and Promotion of Computing Methods for Engineering and Science (EPMESC’ VIII)*, editors L. Shaopei et al., July 25-28, Shanghai, China, 2001.

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Kim, D., **Ghajar, A. J.**, and Dougherty, R. L., "Robust Heat-Transfer Correlations for Turbulent Gas-Liquid Flow in Vertical Pipes," * Journal of Thermophysics and Heat Transfer*, Vol. 14, No. 4, pp. 574-578, 2000.

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Whitelock, D. P., Brusewitz, G. H. and **Ghajar, A. J.**, "Thermal/Physical Properties Affect Predicted Weight Loss of Fresh Peaches," * Transactions of the ASAE*, Vol. 42, No. 4, pp. 1047-1053, 1999.

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Kim, D., **Ghajar, A. J.**, Dougherty, R. L., and Ryali, V. K.,"Comparison of 20 Two-Phase Heat Transfer Correlations with Seven Sets of Experimental Data, Including Flow Pattern and Tube Inclination Effects," * Heat Transfer Engineering*, Vol. 20, No. 1, pp. 15-40, 1999.

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Tam, L. M. and **Ghajar, A. J.**, "The Unusual Behavior of Local Heat Transfer Coefficient in a Circular Tube with a Bell-Mouth Inlet," * Experimental Thermal and Fluid Science*, Vol. 16, No. 3, pp. 187-194, 1998.

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Tam, L. M. and **Ghajar, A. J.**, "Effect of Inlet Geometry and Heating on the Fully Developed Friction Factor in the Transition Region of a Horizontal Tube," * Experimental Thermal and Fluid Science*, Vol. 15, No. 1, pp. 52-64, 1997.

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Tang, W. and **Ghajar, A. J.**, "Experimental Study of Conjugate Heat Transfer in a Horizontal Channel with Discrete Heated Cubic Blocks," * Thermal Management of Hand-Held, Wearable, and Portable Electronics*, eds. C. H. Amon et al., ASME, HTD-Vol. 343, pp. 91-102, 1997.

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Cutbirth, J. M. and **Ghajar, A. J.**, "Thermal and Hydraulic Analysis of a High Flux Heat Exchanger," * Thermal Management of Commercial and Military Electronics*, eds. R. Schmidt et al. ASME, HTD-Vol. 329, pp. 187-196, 1996.

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Arabzadeh, M., Kim, D. and **Ghajar, A. J.**, "Experimental Study of Geometric Effects on Forced Air-Cooling of Regular In-Line Array of Electronic Components," * Proceedings of the ASME/JSME Thermal Engineering Joint Conference*, eds. L.S. Fletcher and T. Aihara, ASME, Vol. 4, pp. 231-239, 1995.

**[PDF]****Ghajar, A. J.**, Tang, W. C. and Beam, J. E., "Methodology for Comparison of Hydraulic and Thermal Performance of Alternative Heat Transfer Fluids in Complex Systems," * Heat Transfer Engineering*, Vol. 16, No. 1, pp. 60-72, 1995.

**[PDF]****Ghajar, A. J.** and Tam, L. M., "Flow Regime Map for a Horizontal Pipe with Uniform Heat Flux and Three Different Inlet Configurations," * Experimental Thermal and Fluid Science*, Vol. 10, No. 3, pp. 287-297, 1995.

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Bang, K., **Ghajar, A. J.** and Komanduri, R., "The Effect of Substrate Surface Temperature on the Morphology and Quality of Diamond Films Produced by the Oxy-Acetylene Combustion Method," * Thin Solid Films*, Vol. 238, pp. 172-183, February 1994.

**[PDF]****Ghajar, A. J.** and Tam, L. M., "Heat Transfer Measurements and Correlations in the Transition Region for a Circular Tube with Three Different Inlet Configurations," * Experimental Thermal and Fluid Science*, Vol. 8, No. 1, pp. 79-90, 1994.

**[PDF]****Ghajar, A. J.** and Bang, K., "Parametric Effects on the Substrate Temperature Profile in Oxy-Acetylene Flames," * Heat Transfer Engineering*, Vol. 14, No. 3, pp. 48-59, 1993.

**[PDF]****Ghajar, A. J.** and Bang, K., "Experimental and Analytical Studies of Different Methods for Producing Stratified Flows," * Energy – The International Journal*, Vol. 18, No. 4, pp. 323-334, 1993.

**[PDF]**

Arabzadeh, M., Ogden, E. L. and **Ghajar, A. J.**, "Conduction Heat Transfer Measurements for an Array of Surface Mounted Heated Components," * Enhanced Cooling Technologies for Electronics Applications*, eds. S. V. Garimella, et al., ASME, HTD-Vol. 263, pp. 69-78, 1993.

**[PDF]****Ghajar, A. J.** and Madon, K. F., "Pressure Drop Measurements in the Transition Region for a Circular Tube with Different Inlet Configurations," * Experimental Thermal and Fluid Science*, Vol. 5, No. 1, pp. 129-135, 1992.

**[PDF]**

Abu-Hamdan, M. G., Zurigat, Y. H. and **Ghajar, A. J.**, "An Experimental Study of a Stratified Thermal Storage Under Variable Inlet Temperature for Different Inlet Designs," * International Journal of Heat and Mass Transfer*, Vol. 35, No. 8, pp. 1927-1934, 1992.

**[PDF]**

Zurigat, Y. H., Liche, P. R. and **Ghajar, A. J.**, "Influence of Inlet Geometry on Mixing in Thermocline Thermal Energy Storage," * International Journal of Heat and Mass Transfer*, Vol. 34, No. 1, pp. 115-125, 1991.

**[PDF]****Ghajar, A. J.** and Zurigat, Y. H., "Microcomputer-Assisted Heat Transfer Measurements/Analysis in a Circular Tube," * International Journal of Applied Engineering Education*, Vol. 7, No. 2, pp. 125-134, 1991.

**[PDF]****Ghajar, A. J.** and Zurigat, Y. H., "Numerical Study of the Effect of Inlet Geometry on Stratification in Thermal Energy Storage," * Numerical Heat Transfer*, Part A: Applications, Vol. 19, No. 1, pp. 65-83, 1991.

**[PDF]**

Wang, Y. and **Ghajar, A. J.**, "Effect of Component Geometry and Layout on Flow Distribution for Surface Mounted Electronic Components: A Smoke Flow Visualization Study," * Heat Transfer Enhancement in Electronics Cooling*, eds. S. H. Bhavnani and M. Greiner, ASME, HTD-Vol. 183, pp. 25-31, 1991.

**[PDF]**

Zurigat, Y. H. and **Ghajar, A. J.**, "Comparative Study of Weighted Upwind and Second Order Upwind Difference Schemes," * Numerical Heat Transfer*, Part B: Fundamentals, Vol. 18, No. 1, pp. 61-79, 1990.

**[PDF]**

Zurigat, Y. H., Bang, K. and **Ghajar, A. J.**, "Methods for Producing Linear Density Gradients in Laboratory Tanks," * Energy - The International Journal*, Vol. 15, No. 1, pp. 23-34, 1990.

**[PDF]****Ghajar, A. J.** and Raza, K., "Mass Transfer Analogy for Heat Transfer Experiments in Thermal Storage," * International Communications in Heat and Mass Transfer*, Vol. 17, No. 1, pp. 79-91, 1990.

**[PDF]**

Zurigat, Y. H., Maloney, K. J. and **Ghajar, A. J.**, "A Comparison Study of One-Dimensional Models for Stratified Thermal Storage Tanks," * ASME Journal of Solar Energy Engineering*, Vol. 111, No. 3, pp. 204-210, 1989.

**[PDF]****Ghajar, A. J.** and Yoon, H. K., "A Heat Transfer Correlation for Viscoelastic Turbulent Pipe Flows," * Chemical Engineering Communications*, Vol. 78, pp. 167-177, 1989.

**[PDF]**

Toh, K. H. and **Ghajar, A. J.**, "Heat Transfer in Thermal Entrance Region for Viscoelastic Fluids in Turbulent Pipe Flows," * International Journal of Heat and Mass Transfer*, Vol. 31, No. 6, pp. 1261-1267, 1988.

**[PDF]**

Zurigat, Y. H., **Ghajar, A. J.** and Moretti, P. M., "Stratified Thermal Storage Tank Inlet Mixing Characterization," * Applied Energy*, Vol. 30, No. 2, pp. 99-111, 1988.

**[PDF]****Ghajar, A. J. **and Azar, M. Y., "Empirical Correlations for Friction Factor in Drag-Reducing Turbulent Pipe Flows," * International Communications in Heat and Mass Transfer*, Vol. 15, No. 6, pp. 705-718, 1988.

**[PDF]**

Yoon, H. K. and **Ghajar, A. J.**, "Heat Eddy Diffusivity for Viscoelastic Turbulent Pipe Flows," * International Communications in Heat and Mass Transfer*, Vol. 14, No. 3, pp. 237-249, 1987.

**[PDF]**

Yoon, H. K. and **Ghajar, A. J.**, "A Note on the Powell-Eyring Fluid Model," * International Communications in Heat and Mass Transfer*, Vol. 14, No. 4, pp. 381-390, 1987.

**[PDF]**

Jakobsson, H. Th. and **Ghajar, A. J.**, "Numerical Solutions of Heat Conduction and Simple Fluid Flow Problems," * International Communications in Heat and Mass Transfer*, Vol. 14, No. 1, pp. 67-79, 1987.

**[PDF]****Ghajar, A. J.** and Asadi, A., "Improved Forced Convective Heat Transfer Correlations for Liquids in the Near-Critical Region," * AIAA Journal*, Vol. 24, No. 12, pp. 2030-2037, 1986.

**[PDF]**

Zurigat, Y. H. and **Ghajar, A. J.**, "Computer Simulation of Woodstove Thermal Storage System," * Energy Conversion and Management*, Vol. 26, No. 2, pp. 165-173, 1986.

**[PDF]**

Oppel, F. J., **Ghajar, A. J.** and Moretti, P. M., "A Numerical and Experimental Study of Stratified Thermal Storage," * ASHRAE Transactions*, Vol. 92 (part 2), pp. 293-309, 1986.

**[PDF]**

Oppel, F. J., **Ghajar, A. J.** and Moretti, P. M., "Computer Simulation of Stratified Heat Storage," * Applied Energy*, Vol. 23, No. 3, pp. 205-224, 1986.

**[PDF]**

Yoon, H. K. and **Ghajar, A. J.**, "A New Heat Eddy Diffusivity Equation for Calculation of Heat Transfer to Drag Reducing Turbulent Pipe Flows," * International Communications in Heat and Mass Transfer*, Vol. 13, No. 4, pp. 449-464, 1986.

**[PDF]**

Asgeirsson, L. S. and **Ghajar, A. J.**, "Prediction of Thermal Conductivity and Viscosity for Some Fluids in the Near-Critical Region," * Chemical Engineering Communications*, Vol. 43, Nos. 1-3, pp. 165-184, 1986.

**[PDF]**

Kanchanalakshana, D. and **Ghajar, A. J.**, "An Improved Falling Sphere Viscometer for Intermediate Concentrations of Viscoelastic Fluids," * International Communications in Heat and Mass Transfer*, Vol. 13, No. 2, pp. 219-233, 1986.

**[PDF]**

Maxwell, M. J. and **Ghajar, A. J.**, "Laminar Forced Convective Heat Transfer with Varying Properties in the Entrance Region of Flat Rectangular Ducts," * Heat Transfer Engineering*, Vol. 6, No. 4, pp. 31-38, 1985.

**[PDF]**

Ghorbani-Tari, S. and **Ghajar, A. J.**, "Improved Free Convective Heat Transfer Correlations in the Near-Critical Region," * AIAA Journal*, Vol. 23, No. 10, pp. 1647-1649, 1985.

**[PDF]**

Pilcher, K. R. and **Ghajar, A. J.**, "Thermal Storage Mass Enhances Woodstove Combustion and Reduces Pollution," * Energy - The International Journal*, Vol. 10, No. 10, pp. 1151-1157, 1985.

**[PDF]**

Yoon, H. K. and **Ghajar, A. J.**, "An Analysis of the Heat Transfer to Drag Reducing Turbulent Pipe Flows," * ASME Journal of Heat Transfer*, Vol. 106, No. 4, pp. 898-900, 1984.

**[PDF]****Ghajar, A. J.** and Parker, J. D., "Reference Temperatures for Supercritical Laminar Free Convection on a Vertical Flat Plate," * ASME Journal of Heat Transfer*, Vol. 103, No. 4, pp. 613-616, 1981.

**[PDF]****Ghajar, A. J.** and Parker, J. D., "Laminar-Free Convection in the Supercritical Region with Variable Properties," In the * Proceedings of the 1980 Heat Transfer and Fluid Mechanics Institute*, eds. M. Gerstein and P. R. Choudhury, Stanford University Press, pp. 196-208, 1980.

**[PDF]****Ghajar, A. J.** and Tiederman, W. G., "Prediction of Heat Transfer Coefficients in Drag Reducing Turbulent Pipe Flows," * AIChE Journal*, Vol. 23, No. 1, pp. 128-131, 1977.