Publications – Tim Ameel

Slip Flow Heat Transfer
  1. J. van Rij, T. Ameel, T. Harman, The Effect of Viscous Dissipation and Rarefaction on Rectangular Microchannel Convective Heat Transfer, International Journal of Thermal Sciences, in press.
  2. J. van Rij, T. Ameel, T. Harman, An Evaluation of Secondary Effects on Microchannel Frictional and Heat Transfer Characteristics, International Journal of Heat and Mass Transfer, submitted for review, March, 2008.
  3. J. van Rij, T. Ameel, and T. Harman, Effects of Creep Flow and Viscous Dissipation in the Slip Regime for Isoflux Rectangular Microchannels,” Paper IMECE2007-42619, Proceedings of ASME International Mechanical Engineering Congress and Exposition, Seattle, November 2007.
  4. J. van Rij, T. Ameel, and T. Harman, Constant Wall Temperature Nusselt and Poiseuille Numbers in Rectangular Microchannels, Proceedings of 2007 ASME-JSME Thermal Engineering Conference and Summer Heat Transfer Conference, pp. 893-900, July 8-12, 2007, Vancouver, BC, Canada.
  5. J. van Rij, T. Harman, and T.A. Ameel, The Effect of Creep Flow on Two-dimensional Isoflux Microchannels, International Journal of Thermal Sciences, 46, pp. 1095-1103, 2007.
  6. N. Xiao, J. Elsnab and T.A. Ameel, Microtube Gas Flows with Second-order Slip Flow and Temperature Jump Boundary Conditions, International Journal of Thermal Sciences, in print.
  7. N. Xiao, J. Elsnab, S. Thomas, and T.A. Ameel, Isothermal Microtube Heat Transfer with Second-Order Slip Flow and Temperature Jump Boundary Conditions, Paper IMECE2006-15940, ASME International Mechanical Engineering Congress and Exposition, Chicago, November 2006.
  8. J. van Rij, T.A. Ameel, and T. Harman, The Effect of Viscous Dissipation on Two-Dimensional Microchannel Heat Transfer, Paper IMECE2006-16121, ASME International Mechanical Engineering Congress and Exposition, Chicago, November 2006.
  9. N. Xiao, J. Elsnab, T.A. Ameel, Microtube Gas Flows with Second-order Slip Flow and Temperature Jump Boundary Conditions, 4th International Conference on Nanochannels, Microchannels and Minichannels, Limerick, Ireland, June 2006.
  10. J. van Rij, T. Harman, T.A. Ameel, The Effect of Creep Flow on Two-dimensional Isoflux Microchannels, 4th International Conference on Nanochannels, Microchannels and Minichannels, Limerick, Ireland, June 2006.
  11. S.P. Yu and T.A. Ameel, Slip Flow Convection in Isoflux Rectangular Microchannels, Journal of Heat Transfer, Vol. 124, No. 2, pp. 346-355, 2002.
  12. S.P. Yu and T.A. Ameel, A Universal Entrance Nusselt Number for Internal Slip Flow, International Communications in Heat and Mass Transfer, Vol. 28, No. 7, pp. 905-910, 2001.
  13. S.P. Yu and T.A. Ameel, Slip Flow Heat Transfer in Rectangular Microchannels, International Journal of Heat and Mass Transfer, Vol. 44, No. 22, pp. 4225-4234, 2001.
  14. S.P. Yu and T.A. Ameel, Slip Flow Low Peclet Number Thermal Entry Problem within a Flat Microchannel Subject to Constant Wall Temperature, Heat Transfer and Transport Phenomena in Microsystems, Banff, Alberta, Canada, October 2000.
  15. M. Wang, T.A. Ameel, A.B. Frazier, and R.O. Warrington, Microtube Convection Heat Transfer for a Power-Law Fluid in Laminar Slip Flow with an Isoflux Boundary Condition, Int. Mechanical Engineering Congress and Exposition, Anaheim, CA, Nov., 1998.
  16. R.F. Barron, X. Wang, T.A. Ameel, and R.O. Warrington, The Graetz Problem Extended to Slip Flow, Int J of Heat and Mass Transfer, Vol. 40, No. 8, pp. 1817-1823, 1997.
  17. T.A. Ameel, R.F. Barron, X. Wang, and R.O. Warrington, Laminar Forced Convection in a Circular Tube with Constant Heat Flux and Slip Flow, Microscale Thermophysical Engineering, Vol. 1, No. 4, pp. 303-320, 1997.
  18. R.F. Barron, X. Wang, R.O. Warrington, and T.A. Ameel, Evaluation of the Eigenvalues for the Graetz Problem in Slip Flow, International Communications in Heat and Mass Transfer, Vol. 23, No. 4, pp. 563-574, 1996.
  19. T.A. Ameel, R.F. Barron, X. Wang, and R.O. Warrington, Laminar Forced Convection in a Circular Tube with Constant Heat Flux and Slip Flow, 2nd U.S. – Japan Joint Seminar on Molecular and Microscale Transport Phenomena, Santa Barbara, August, 1996.
  20. D. Yu, T.A. Ameel, R.F. Barron, R.O. Warrington, and X. Wang, An Improved Solution to the Graetz Problem with Slip-Flow, 4th International Symposium on Heat Transfer, Beijing, China, October, 1996.
Microscale Thermal Fluid Experiments
  1. J. Elsnab, D. Maynes, J. Klewicki, T. Ameel, Mean Velocity Profiles in a High Aspect Ratio Microchannel, Journal of Fluid Mechanics, submitted for review, October 2008.
  2. S. Thomas, and T. Ameel, An Experimental Investigation of Low-Reynolds Number Flow in a T-Channel, Physics of Fluids, submitted for review, July 2008.
  3. P. Fernando, B. Palm, T. Ameel, P. Lundqvist, E. Granryd, A Minichannel Aluminium Tube Heat Exchanger, Part I: Investigation of Single-Phase Heat Transfer Coefficients by the Wilson Plot Method, International Journal of Refrigeration, Vol. 31, No. 4, pp. 669-680, 2008.
  4. P. Fernando, B. Palm, T. Ameel, P. Lundqvist, E. Granryd, A Minichannel Aluminium Tube Heat Exchanger, Part II: Evaporator Performance with Propane, International Journal of Refrigeration, Vol. 31, No. 4, pp. 681-695, 2008.
  5. P. Fernando, B. Palm, T. Ameel, P. Lundqvist, E. Granryd, A Minichannel Aluminium Tube Heat Exchanger, Part III: Condenser Performance with Propane, International Journal of Refrigeration, Vol. 31, No.4, pp. 696-708, 2008.
  6. S. Thomas, T. Ameel, Experimental Investigation of Mixing in a T-channel, 60th Annual Meeting of the Divison of Fluid Dynamics, American Physical Society, Salt Lake City, UT, November 18-20, 2007.
  7. D. Costaschuk, J. Elsnab, S. Petersen., J.C. Klewicki, and T.A. Ameel, Local Pressure Measurement of Nitrogen Flows in an Aluminum Rectangular Microchannel, Physics of Fluids, accepted with minor revisions.
  8. D. Costaschuk, J. Elsnab, S. Petersen, J.C. Klewicki, T.A. Ameel, Axial Static Pressure Measurements of Water Flow in a Rectangular Microchannel, Experiments if Fluids, 43 (6), pp. 907-916, 2007.
  9. D. Costaschuk, J. Elsnab, S. Petersen, J. Klewicki, T. Ameel, Local Pressure Measurement of Nitrogen Flows in an Aluminum Rectangular Microchannel, Proceedings of the ECI International Conference on Heat Tranfer and Fluid Flow in Microscale, Castelvecchio Pascoli, Italy, September 2005.
  10. S. Petersen, D. Costaschuk, J. Elsnab, J. Klewicki, T. Ameel, Mictotube Fluid Dynamic Characteristics with MTV Qualified Flow Conditions, Proceedings of 3rd International Conference on Microchannels and Minichannels, Toronto, Canada, June 2005.
  11. H.E. Hegab, A.B. Bari, and T.A. Ameel, Friction and Convection Studies of R134-a in Microchannels within the Transition and Turbulent Flow Regimes, Experimental Heat Transfer, Vol. 15, No. 4, pp. 245-259, 2002.
  12. A. Bari, H. Hegab, and T.A. Ameel, Experimental Investigation of Flow and Heat Transfer Characteristics of R-134a in Microchannels, SPIE Symposium on Micromachining and Microfabrication, San Francisco, CA, Oct. 2001.
  13. I. Papautsky, S. Mohanty, T.A. Ameel, A.B. Frazier, Effects of Rectangular Microchannel Aspect Ratio on Laminar Friction Constant, SPIE Symposium on Micromachining and Microfabrication, Santa Clara, CA, Sept., 1999, pp. 147-158.
  14. I. Papautsky, J. Brazzle, T.A. Ameel, A.B. Frazier, Laminar Fluid Behavior in Microchannels using Micropolar Fluid Theory, Sensors and Actuators, Vol. 73, No. 1-2, pp. 101-108, 1999.
  15. S. Yu, T.A. Ameel, and M. Xin, An Air-cooled Microchannel Heat Sink with High Heat Flux and Low Pressure Drop, National Heat Transfer Conference, Albuquerque, NM, August, 1999.
  16. I. Papautsky, J. Brazzle, T.A. Ameel, A.B. Frazier, Parallel Sample Manipulation Using Micromachined Pipette Arrays, SPIE Symposium on Micromachining and Microfabrication, Santa Clara, CA, Vol. 3515, pp. 104-115, Sept., 1998.
  17. I. Papautsky, J. Brazzle, T.A. Ameel, A.B. Frazier, Microchannel Fluid Behavior using Micropolar Fluid Theory, IEEE International Workshop on Micro Electro Mechanical Systems, Heidelberg, Germany, January, 199.
  18. R.S. Stanley, R.F. Barron, and T.A. Ameel, Two-phase Flow in Microchannels, Int. Mechanical Engineering Congress and Exposition, Dallas, Nov. 1997.
  19. D. Yu, R.O. Warrington, R.F. Barron, and T.A. Ameel, An Experimental and Theoretical Investigation of Fluid Flow and Heat Transfer in Microtubes, 4th ASME/JSME Thermal Engineering Joint Conference, Maui, Hawaii, March 1995.
  20. D. Yu, R.O. Warrington, R.F. Barron, T.A. Ameel, Mixed Convection Heat Transfer from Micro-chip Sized Repeated Heaters with Consideration of Substrate Conduction, 1st International Symposium on Microelectronic Packaging & PCB Technology, Beijing, China, September, 1994.
Microscale Energy Systems
  1. T.A. Ameel, I. Papautsky, R.O. Warrington, R.S. Wegeng, and M.K. Drost, Miniaturization Technologies for Advanced Energy Conversion and Transfer Systems, AIAA Journal of Propulsion and Power, Vol. 16, No. 4, pp. 577-582, 2000.
  2. T.A. Ameel, I. Papautsky, R.O. Warrington, R.S. Wegeng, and M.K. Drost, Miniaturization Technologies for Advanced Energy Conversion and Transfer Systems, 2nd Symposium on Advanced Energy Conversion Systems and Related Technologies, Nagoya, Japan, Dec., Vol. 1, pp. 172-179, 1998.
  3.  T.A. Ameel, R.O. Warrington, R.S. Wegeng, and M.K. Drost, Miniaturization Technologies Applied to Energy Systems, Energy Conversion and Management, Vol. 38, No. 10-13, pp. 969-982, 1997.
  4. T.A. Ameel, R.O. Warrington, R.S. Wegeng, and M.K. Drost, Miniaturization Technologies Applied to Energy Systems, invited paper, 3rd Biennial Joint Conference on Engineering Systems Design & Analysis, Montpelier, France, July, 1996.
  5. R.S. Wegeng, M.K. Drost, T.A. Ameel, and R.O. Warrington, Energy Systems Miniaturization Technologies, Devices, and Systems, International Symposium on Advanced Energy Conversion System and Related Technologies – RAN95, The Society of Chemical Engineers, Nagoya, Japan, December, 1995.
Microfluidic Systems
  1. T.A. Ameel, I. Papautsky, R.O. Warrington, R.S. Wegeng, and M.K. Drost, Miniaturization Technologies for Advanced Energy Conversion and Transfer Systems, AIAA Journal of Propulsion and Power, Vol. 16, No. 4, pp. 577-582, 2000.
  2. T.A. Ameel, I. Papautsky, R.O. Warrington, R.S. Wegeng, and M.K. Drost, Miniaturization Technologies for Advanced Energy Conversion and Transfer Systems, 2nd Symposium on Advanced Energy Conversion Systems and Related Technologies, Nagoya, Japan, Dec., Vol. 1, pp. 172-179, 1998.
  3. T.A. Ameel, R.O. Warrington, R.S. Wegeng, and M.K. Drost, Miniaturization Technologies Applied to Energy Systems, Energy Conversion and Management, Vol. 38, No. 10-13, pp. 969-982, 1997.
  4. T.A. Ameel, R.O. Warrington, R.S. Wegeng, and M.K. Drost, Miniaturization Technologies Applied to Energy Systems, invited paper, 3rd Biennial Joint Conference on Engineering Systems Design & Analysis, Montpelier, France, July, 1996.
  5. R.S. Wegeng, M.K. Drost, T.A. Ameel, and R.O. Warrington, Energy Systems Miniaturization Technologies, Devices, and Systems, International Symposium on Advanced Energy Conversion System and Related Technologies – RAN95, The Society of Chemical Engineers, Nagoya, Japan, December, 1995
Heat Exchanges
  1. Shrivastava, D., Elsnab, J., and Ameel, T.A., Effects of End Wall Boundary Conditions on Microscale Heat Exchanger Performance, Int. J. of Heat Exchangers, submitted for review, February 2008.
  2. D. Shrivastava, J. Elsnab, and T.A. Ameel, Effects of Axial Wall Conduction and End Wall Boundary Conditions on the Performance of Two-fluid Heat Exchangers, Proceedings of the International Heat Transfer Conference, Sydney, Australia, August 2006.
  3. Devashish and T.A. Ameel, Three-fluid Heat Exchangers with Three Thermal Communication – Part A: General Mathematical Model, International Journal of Heat and Mass Transfer, 47, pp. 3855-3865, 2004.
  4. Devashish and T.A. Ameel, Three-fluid Heat Exchangers with Three Thermal Communication – Part B: Effectiveness Evaluation, International Journal of Heat and Mass Transfer, 47, pp. 3867-3875, 2004.
  5. Devashish and T.A. Ameel, A General Approach for Defining Effectiveness in Ideal Two Fluid Heat Exchangers, ASME Int. Mechanical Engineering Congress and Exposition, New Orleans, Nov., 2002.
  6. T.A. Ameel, Parallel-flow Heat Exchangers with Ambient Thermal Interaction, Heat Transfer Engineering, Vol. 21, pp. 1-8, 2000.
  7.  T.A. Ameel and L. Hewavitharana, Counter-current Heat Exchangers with Both Fluids Subjected to External Heating, Heat Transfer Engineering, Vol. 20, No. 3, pp. 37-44, 1999.
  8. L. Hewavitharana and T.A. Ameel, Performance of Counter-current Heat Exchangers Subjected to External Heating, API and ASME 8th Annual Energy Week Conference, Houston, January 1997.
  9. H.W. Townes, T.A. Ameel, T.C. Reihman, and C.J. Mozer, Fouling and Fouling Removal in Cored Brick Regenerative Heat Exchangers, Fouling of Heat Transfer Equipment, E.F.C. Somerscales and J.G. Knudsen, Editors, Hemisphere Publishing, pp. 389-396, 1981.
  10. T.A. Ameel and H.W. Townes, Computer Simulation of Cored Brick Regenerative Heat Exchangers, Summer Computer Simulation Conference, Seattle, WA, August 1980.
  11. H.W. Townes, T.C. Reihman, C.J. Mozer, T.A. Ameel, Particulate Size and Rates of Pressure Drop Increase in an MHD Air Preheater, 18th Symposium on Engineering Aspects of Magnetohydrodynamics, Butte, Montana, June, 1979.
  12. H.W. Townes, T.C. Reihman, C.J. Mozer, T.A. Ameel, Slag Deposition in a Regenerative Heat Exchanger Over 750 Hours of Operation, 18th Symposium on Engineering Aspects of Magnetohydrodynamics, Butte, Montana, June 1979.
  13. H.W. Townes, T.C. Reihman, C.J. Mozer, T.A. Ameel, Experimental Measurements and Correlations of Nusselt Number for MHD High Temperature Air Preheaters, ASME Winter Annual Meeting, San Francisco, December, 1978, ASME Publications 78-WA/HT-22.
Absorption Refrigeration
  1. T.A. Ameel, K.J. Kim, and B.D. Wood, Non-absorbable Gas Effects on Heat and Mass Transfer in Wavy Laminar Falling Film Absorption, Solar Energy, Vol. 60, No. 6, pp. 301-311, 1997.
  2. K.J. Kim, T.A. Ameel, and B.D. Wood, Performance Evaluations of LiCl and LiBr for Absorber Design Applications in the Open Cycle Absorption Refrigeration System, Journal of Solar Energy Engineering, Vol. 119, No. 2, pp. 165-173, 1997.
  3. K.J. Kim, T.A. Ameel, and B.D. Wood, Performance Evaluations of LiCl and LiBr for Absorber Design Applications in the Open Cycle Absorption Refrigerating System, International Absorption Heat Pump Conference, Montreal, September 1996.
  4. T.A. Ameel, H.M. Habib, and B.D. Wood, Effects of a Non-Absorbable Gas on Interfacial Heat and Mass Transfer for the Entrance Region of a Falling Film Absorber, Journal of Solar Energy Engineering, Vol. 118, No. 1, pp. 45-49, 1996.
  5. T.A. Ameel, K.G. Gee, and B.D. Wood, Performance Predictions of Alternative Low Cost Absorbents for Open-Cycle Absorption Solar Cooling, Journal of Solar Energy, Vol. 54, No. 2, pp. 65-73, 1995.
  6. T.A. Ameel, B.D. Wood, D.A. Siebe, and R.K. Collier, Performance Predictions of Solar Open-Cycle Absorption Air Conditioning Systems in Three Climatic Regions, Journal of Solar Energy Engineering, Transactions of ASME, Vol. 116, No. 2, pp. 107-113, 1994.
  7. T.A. Ameel, B.D. Wood, and D.A. Siebe, Absorber Performance Studies for Open-Cycle Solar Absorption Cooling Systems, ASME/ASES/SolTech Joint Solar Energy Conference, Washington D.C., April 1993.
  8. T.A. Ameel and B.D. Wood, Non-Absorbable Gas Effects on Heat and Mass Transfer in Wavy Laminar Falling Film Absorption, ASME/JSME/JSES International Solar Energy Conference, Maui, Hawaii, April 1992.
  9. H.M. Habib, T.A. Ameel and B.D. Wood, Effects of a Non-Absorbable Gas on the Heat and Mass Transfer for the Entrance Region of a Falling Film Absorber, ASME/JSME/JSES International Solar Energy Conference, Reno, NV, March 1991.
Review Articles
  1. I. Papautsky and T.A. Ameel, A Review of Laminar Single-phase Flow in Microchannnels, ASME Int. Mechanical Engineering Congress and Exposition, New York, Nov. 2001.
  2. I. Papautsky, T.A. Ameel, and A.B. Frazier, Single-phase Fluid Flow in Microchannels, 2nd Symposium on Advanced Energy Conversion Systems and Related Technologies, Nagoya, Japan, Vol. 1, pp. 186-187, Dec., 1998.
  3. R. Stanley, T.A. Ameel, and R.O. Warrington, Convective Flow Boiling in Microgeometries – A Review and Applications, Convective Flow Boiling, Taylor and Francis, 1996.
  4. D.K. Bailey, T.A. Ameel, and R.O. Warrington, Single Phase Forced Convection Heat Transfer in Microgeometries – a Review, 30th Intersociety Energy Conversion Engineering Conference, Orlando, Florida, August 1995.
  5. R. Stanley, T.A. Ameel, and R.O. Warrington, Convective Flow Boiling in Microgeometries: A Review, Applications, and Work in Progress, The Convective Flow Boiling International Conference, Banff, Alberta, Canada, May 1-5, 1995.
Miscellaneous
  1. T.A. Ameel, B.K. Gale, I.R. Harvey, A Three-semester Interdisciplinary Educational Program in Microsystems Engineering, Proc. ASEE Conference and Exposition, Salt Lake City, UT, June 2004.
  2. I.R. Harvey, M.S. Miller, S. Blair, T.A. Ameel, B.K. Gale, T. Ring, Building Academic, Research, and Commercialization Programs in Micro and Nano Science and Engineering at the University of Utah, 15th Biennial University/Government/Industry Microelectronics Symposium, Boise, ID, June 2003.
  3. Devashish, T.A. Ameel, and R. Roemer, Theoretical Evaluation of Convective Heat Transfer Coefficients in Conjugated Problems Using the Second Law of Thermodynamics, ASME Int. Mechanical Engineering Congress and Exposition, New Orleans, Nov. 2002.
  4. H. Hegab, B. Shen, W. Dai, and T. Ameel, Transient Three-dimensional Numerical Model for Thermal Analysis in X-ray Lithography, Numerical Heat Transfer, Part A, Vol. 34, No. 8, pp. 805-820, 1998.
  5. T.A. Ameel, Average Effects of Forced Convection Over a Flat Plate with an Unheated Starting Length, International Communications in Heat and Mass Transfer, Vol. 24, No. 8, pp. 1113-1120, 1997
  6. B. Ganesh, D. Chinn, T.A. Ameel, R.A. Normann, D.G. Petelenz, and A.B. Frazier, Packaging of Nueral Stimulation / Recording Systems: Review and New Mechanism for Interfacing Passive Electrodes and Signal Processing Circuitry, The Pacific Rim/ASME International Intersociety Electronic and Photonic Packaging Conference, Hawaii, June, 1997
  7. T.A. Ameel and K.J. Kim, Measurement of Small Concentrations of Gas in a Low Pressure Water Vapor Mixture, Journal of Thermophysics and Heat Transfer, Vol. 11, No. 4, pp. 582-585, 1997.
  8. D. Yu, T.A. Ameel, R.O. Warrington, and R.F. Barron, Conjugate Heat Transfer with Buoyancy Effects from Micro-sized Repeated Heaters, Journal of Electronic Packaging, Vol. 119, pp. 275-280, 1997.
  9. D. Yu, T.A. Ameel, R.O. Warrington, Thermal and Static Analysis of the Fixed Scroll, Thirteenth International Compressor Engineering Conference at Purdue, West Lafayette, Indiana, July 1996.
  10. R.O. Warrington and T.A. Ameel, Experimental Studies of Natural Convection in Partitioned Enclosures with a Trombe Wall Geometry, Journal of Solar Energy Engineering, Vol. 117, No. 1, pp. 16-21, 1995.
  11. D. Yu, R.F. Barron, T.A. Ameel, and R.O. Warrington, Mixed Convection Heat Transfer from Horizontal Tube Banks Between Two Vertical Parallel Plates, Numerical Heat Transfer, Vol. 27, No. 4, pp 473-486, 1995.
  12. T.A. Ameel, R.O. Warrington, D. Yu, and G. Dahlbacka, Thermal Analysis of X-ray Irradiated Thick Resists to Determine Induced Structural Deformations, 10th International Heat Transfer Conference, Brighton, England, August, 1994, Heat Transfer 1994, vol. 5, pp. 313-319, Ed. G.F. Hewitt, Taylor and Francis Publishing.
  13. D. Yu, T.A. Ameel, and R.O. Warrington, Mixed Convection Heat Transfer from a Vertical Array of Horizontal Cylinders Within Confining Walls, 10th International Heat Transfer Conference, Brighton, England, August, 1994, Heat Transfer 1994, vol. 5, pp. 597-602. Ed. G.F. Hewitt, Taylor and Francis Publishing.
  14. T.A. Ameel and J.Y. Murthy, Simulation of Mixed Convection Heat Transfer in a Barrel Reactor, AIAA Thermophysics, Plasmadynamics and Lasers Conference, San Antonio, Texas, June 1988.