Publications

Ali Koşar

Journal PublIcatIons

1.Koşar, A., “Exergo-economic Analysis of Micro Pin Fin Heat Sinks,” International Journal of Energy Research, 2010, Accepted.

2. Koşar A., Özdemir, M.R., and Keskinöz, M., “Pressure Drop across Micro-Pin Heat Sinks under Unstable Boiling Conditions”, International Journal of Thermal Sciences, 49(7), pp. 1353-1363, 2010.

3. Şeşen, M., Khudhayer, W., Karabacak, T., and Koşar, A., “Effect of Substrate Thickness and Material on Heat Transfer in Microchannel Heat Sinks”, IET Micro@Nano Letters, 2009, In press.

4. Koşar, A., “Effect of substrate thickness and material on heat transfer in microchannel heat sinks,” International Journal of Thermal Sciences, 49(4), pp. 635-642, 2010.

5. Kosar, A., “Exergy Analysis of Second-generation Micro Heat Sinks under Single-phase and Flow Boiling Conditions,” International Journal of Exergy, 7(2), pp. 147-163, 2010.

6. Kosar, A., “A Model to Predict Saturated Critical Heat Flux in Minichannels and Microchannels,” International Journal of Thermal Sciences, 48(2), pp. 261-270, 2009.

7. Kosar, A., “Two-Phase Pressure Drop Across a Hydrofoil-Based Micro-Pin Device Using R-123,” Experimental Thermal And Fluid Science, 32(6), pp. 1213-1221, 2008.

8. Koşar, A. and Peles, Y., “Microscale Pin Fin Heat Sinks-Parametric Performance Evaluation Study,” IEEE Transactions on Components and Packaging Technologies, 30(4), pp. 855-865, 2007.

9. Schneider, B.R., Koşar, A., and Peles, Y., “Hydrodynamic Cavitation and Boiling in Refrigerant (R-123) Flow inside Microchannels,” International Journal of Heat and Mass Transfer, 50(13-14), pp. 2838-2854, 2007.

10. Koşar, A. and Peles, Y., “Boiling Heat Transfer in a Hydrofoil-based Micro Pin Fin Heat Sink,” International Journal of Heat and Mass Transfer, 50(5-6), pp. 1018-1034, 2007.

11. Koşar, A. and Peles, Y., “Critical Heat Flux of R-123 in Silicon-based Microchannels,” Journal of Heat Transfer, 129(7), pp. 844-851, 2007.

12. Koşar, A. and Peles, Y., “Thermal-Hydraulic Performance of MEMS-Based Pin Fin Heat Sink,” Journal of Heat Transfer, 12 (2), pp. 121-131, 2006.

13. Koşar, A., Kuo C.-J., and Peles, Y., “Suppression of Boiling Flow Oscillations in Parallel Microchannels by Inlet Restrictors,” Journal of Heat Transfer, 128(3), pp. 251-260, 2006.

14. Jensen, M.K., Peles, Y., Srikar, V., Koşar, A., and Kuo, C.-J., “Methods and Preliminary Results on Enhanced Boiling Heat Transfer in Second Generation Microchannels,” Microfluidics and Nanofluidics, 2(5), pp. 387-397, 2006.

15. Koşar, A. and Peles, Y., “Convective Flow of a Refrigerant (R-123) across a Bank of Micro Pin Fins,” International Journal of Heat and Mass Transfer, 49(17-18), pp. 3142-3155, 2006.

16. Schneider, B., Kuo, C.-J., Koşar, A., Mishra, C., Cole, G.S., Scaringe, R.P., and Peles, Y., “Cavitation Enhanced Heat Transfer in Microchannels,” Journal of Heat Transfer, 128(12), pp. 1293-1301, 2006.

17. Kuo, C.-J., Koşar, A., Peles, Y., Virost, S., Mishra, C., and Jensen, M.K., “Bubble Dynamics during Boiling in Enhanced Surface Microchannels,” Journal of Microelectromechanical Systems, 15(6), pp. 1514-1527, 2006.

18. Koşar, A., Kuo C.-J., and Peles, Y., “Boiling Heat Transfer in Rectangular Microchannels with Reentrant Cavities,” International Journal of Heat and Mass Transfer, 48(23), pp. 4867-4886, 2005.

19. Koşar, A., Kuo C.-J., and Peles, Y., “Reduced Pressure Boiling Heat Transfer in Rectangular Microchannels with Interconnected Reentrant Cavities,” Journal of Heat Transfer, 127(10), pp. 1106-1114, 2005.

20. Peles, Y., Koşar, A., Mishra, C., Kuo, C.-J., and Schneider, B., “Forced Convective Heat Transfer across a Pin Fin Micro Heat Exchanger,” International Journal of Heat and Mass Transfer, 48(17), pp. 3615-3627, 2005.

21. Koşar, A., Mishra, C., and Peles, Y., “Laminar Flow across a Bank of Low Aspect Ratio Micro Pin Fins,” Journal of Fluids Engineering, 127(3), pp. 419-430, 2005.

CONFERENCE PROCEEDINGS

22. Şendur, K., Koşar, A., and Mengüç, M.P., “Localized radiative energy transfer from a plasmonic bow-tie nanoantenna to a magnetic thin film stack,” Zouhdi, Said (ed.), International Conference on Metamaterials, Photonic Crystals and Plasmonics (META'10), Paris, France: META'10, March 2010, 582-586.

23. Şeşen, M., Arslanalp, M. ,Şendur, K., Mengüç, M.P.,  Yağcı Acar, H.F., and Koşar, A.,“Compact Heat Removal System with Magnetic Nanoparticles ,” 6th Nanoscience and nanotechnology Conference (NanoTr6), Çeşme, Turkey: Nanotr6, June 2010, 401A.

24. Özdemir, M.R. and Koşar, A., “Boiling Heat Transfer in Microtubes at High Flow rates,” 14^th International Heat Transfer Conference 2010, Washington DC, USA, August 2010, IHTC14-23235.

25. Özdemir, M.R., Demir , O., Özenel, C., Bahçıvan, O., and Koşar, A., “Thermal, Exergy, and Exergoeconomic Analysis of Micro Heat Sinks at High Flow rates,” 10^th Bienial Conference on Engineering Systems Design and Analysis  2010 (ASME), Yeditepe University, Istanbul, July 2010, ESDA2010-25239.

26. Özdemir, M.R. and Koşar, A., “Experimental Study on Single-phase Flow in Microtubes at High Mass Flow rates ,” Proceedings of ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting and 8th International Conference on Nanochannels, Microchannels, and Minichannels , August 2010, Montreal, Canada, FEDS-ICNMM2010-30792.

27. Şeşen, M., Koşar, B.A., Ahıshalıoğlu, B., Khudhayer, W., Karabacak, T., and Koşar, A., “A Compact Nanostructure Enhanced Heat Sink with Flow in a Rectangular Channel,” 10^th Bienial Conference on Engineering Systems Design and Analysis  2010 (ASME), Yeditepe University, Istanbul, July 2010, ESDA2010-25336.

28. Koz, M. and Koşar, A., “Parameter Optimization of a Micro Pin Fin Heat Sink,” Proceedings of ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting and 8th International Conference on Nanochannels, Microchannels, and Minichannels , August 2010, Montreal, Canada, FEDS-ICNMM2010-30473.

29. Şeşen, M., Ulun, S., Su, H.Ç., Bahçeci, B., Yağcı Acar, H.F., and Koşar, A., “Magnetic Actuation of Nanofluids with Ferromagnetic Particles,” Proceedings of ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting and 8th International Conference on Nanochannels, Microchannels, and Minichannels , August 2010, Montreal, Canada, FEDS-ICNMM2010-30728.

30. Özdemir, M.R., Koz, M. and Koşar, A., “Parametric Study on the Effect of Endwalls on Fluid Flow in Micro Pin-Fins,” 5^th International WSEAS Conference on Applied and Theoretical Mechanics  2009, Tenerife, İspanya, 14-16 December 2009, 697-208.

31. Koşar, A., Şeşen, M., Akkartal, C.B., Khudhayer, W., and Karabacak, T., “Design of a Compact Nanostructure Integrated Pool Boiler for Microscale Cooling Applications,” NANOMATS International Conference on Nanomaterials and Nanosystems 2009, August 10-13, 2009, İTÜ Ayazağa, Istanbul, O73.

32. Koşar, A.,  Akbaş, A., Şahin, Ö., Kubilay, A., Oral, Ö., ve Gözüaçık, D., "Bubbly Cavitating Flow Generation and Investigation of its Erosional Nature for Biomedical Applications", 2nd Micro and Nano Flows Conference, West London, UK: MNF2009, September 2009.

33. Koşar, A., "Exergo-economic Analysis of Micro Pin Fin Heat Sinks", Global Conference on Global Warming 2009, Istanbul, July 2009.

34. Koşar, A., “Exergy Analysis on Second Generation Micro Heat Sinks,” Global Conference on Global Warming 2008, Istanbul, Turkey. 

35. Koşar, A. and Özseçen, M.Y., “Exergy Analysis of Second Generation Micro Heat Sinks under Flow Boiling Conditions,” 3rd International Conference on Energy Sustainability, San Fransisco, CA, July 19-23, 2009, ES2009-90286.

36. Koşar, A., Özdemir, M.R., and Keskinöz, M., " Pressure Drop across Micro-Pin Heat Sinks under Boiling Conditions," 7th ECI International Conference on Boiling Heat Transfer, May 3-7, Florianópolis, Brezilya, 2009, MC-09.

37. Şeşen, M., Akkartal, C.B., Khudhayer, W., Karabacak, T. and Koşar, A., “A compact nanostructure integrated pool boiler for microscale cooling applications,” ASME International Mechanical Engineering Congress and Exposition, November 13-19, 2009, Bueno Vista, Florida, IMECE2009-11008.

38. Koz, M. and Koşar, A., “Parametric Study of the Effect of Endwalls on Heat and Fluid Flow in Micro Pin Fin Heat Sinks,” ECI International Conference on Heat Transfer and Fluid Flow in Microscale 2008, Whistler, BC, Canada, 2008.

39. Koşar, A., AE Bergles, GS Cole, Yoav Peles, “Experimental investigation of critical heat flux in microchannels for flow-field probes,” ASME Conference on Nanochannels, Microchannels and Minichannels ICNMM 2009, Pohang, South Korea.

40. Koşar, A., Schneider, B., and Yoav Peles, “Hydrodynamic Characteristics Of Crossflow Over MEMS-Based Pillars,” ASME International Mechanical Engineering Congress and Exposition IMECE 2008, Boston, MA.

41. Koşar, A. and Peles, Y., “Critical Heat Flux of R-123 in Rectangular Microchannels Boiling,” Thermal Challenges in Next Generation Electronic Systems II (Thermes II 2007), January 7-10, Santa Fe, New Mexico, pp. 147-154, 2007

42. Koşar A. and Peles, Y., “Two-Phase Flow Across a Bank of Hydrofoil Micro Pin Fins,” 9^th AIAA/ASME Joint Thermophysics and Heat Transfer Conference, June 5-8, 2006, San Fransisco, California.

43. Koşar, A. and Peles, Y., “Hydrofoil-Based Micro Pin Fin Heat Sink,” ASME International Mechanical Engineering Congress and Exposition, November 5-10, Chicago, IL, IMECE 2006-13257, 2006.

44. Jensen, M.K., Peles, Y., Srikar, V., Koşar, A., and Kuo, C.-J., “Enhanced Boiling Heat Transfer in Second Generation Micro Channels Part A: Methods and Preliminary Results,” 3rd International Conference on Microchannels and Minichannels, June 13-15, 2005, Toronto, Ontario, Canada.

45. Koşar, A., Kuo, C.-J., Peles, Y., and Jensen, M., “Enhanced Heat Transfer in Second Generation Micro Channels Part B: Sub-Atmospheric Results,” 3rd International Conference on Microchannels and Minichannels, June 13-15, 2005, Toronto, Ontario, Canada.

46. Peles Y., Koşar A., Mishra C., Kuo C.-J., and Schneider B., “Micro Scale Pin Fin Heat Sink,” 3rd  International Conference on Microchannels and Minichannels, June 13-15, 2005, Toronto, Ontario, Canada.

47. Koşar A. and Peles, Y., “Single-Phase Heat Transfer in MEMS-Based Micro Pin Fin Heat Sink,” ASME International Mechanical Engineering Congress and Exposition, November 5-12, 2005, Orlando, Florida.

48. Kuo, C.-J., Koşar A., Jensen, M.K., and Peles, Y., “Boiling in Enhanced Surface Microchannels,” ASME International Mechanical Engineering Congress and Exposition, November 5-12, 2005, Orlando, Florida.