tJen

Tien-Chien Jen

Dean
Office: ENGR 333B
Phone: (907) 786-1900
Email: tjen@uaa.alaska.edu

Education

Ph.D. - Mechanical Engineering, University of California, Los Angeles, 1993

M.S. - Power Mechanical Engineering, National Tsing Hua University, 1987

B.S. - Naval Architecture and Marine Engineering, National Cheng-Kung University, Tainan, Taiwan, 1982

Research Interests

Thermal Aspects of Machining Processes (e.g., grinding, turning, honing, milling, etc.)
Environmentally benign manufacturing
Diffusion Boding
Fuel Cells and Hydrogen Generation Technology
Cold Gas Dynamic Spraying for nanoparticles
Nano-Technology(thermal) in Materials Processing
Biosensing Technology; CFD and Numerical Heat Transfer

Publications

1. Shaeri, R.M., and Jen, T.C., 2012," Turbulent Heat Transfer Analysis of an Array
of Perforated Fins Due to Changes in Perforation Sizes," to appear in Numerical
Heat Transfer Part A.
2. Zhu, L. Jen, T.C., Yen, Y.H., and Kong, X.L., 2011," Feasibility and Effectiveness
of Heat Pipe Cooling in End Milling Operations Thermal, Structural Static, and
Dynamic Analyses : A New Approach," to appear in ASME Journal of Manufacturing
Science and Engineering.
3. Zhu, L. Jen, T.C., Yin, C.-L. 2011," Structural Design of a Silicon Six-Wafer Micro-
Combustor under the Effect of Heat Transfer Boundary Condition at the Outer
Walls," to Appear in Journal of the Chinese Society of Mechanical Engineers.
4. Zhu, L., Jen, T.C., Yin, C.L., X. L. Kong, and Yen, Y.H. 2011, " Experimental
Analysis to Investigate the Feasibility and Effectiveness in Using Heat Pipe
Embedded End-mills," to appear in The International Journal of Advanced
Manufacturing Technology.
5. Zhu, L., Jen, T.C., Yin, C.-L. 2011, "Numerical Investigation of the Structure of a
Silicon Six-Wafer Micro-combustor under the Effect of Hydrogen/Air Ratio,"
Journal of Microsystem Technologies, Vol. 16, No. 10, pp. 1777-1786.
6. Chen, C.N., Han, J.T., Jen, T.C., Shao, L., 2011," Dry-out CHF Correlation for
R134a Flow Boiling in a Horizontal Helically-coiled Tube. Int. J. Heat Mass
Transfer, Vol. 54, issue 1-3, pp.739-745.
7. Chen, C.N., Han, J.T., Jen, T.C., Shao, L., 2011, "Experimental Study on CHF
Characteristics of R134a Flow Boiling in Horizontal Helically-coiled Tubes," Int. J.
Thermal Sciences, Vol. 50, issue 2, pp. 169-177.
8. Chen, C.N., Han, J.T., Jen, T.C., Shao, L., 2011, "Thermo-chemical
Characteristics of R134aFlow Boiling in Helically-coiled Tubes at Low Mass Flux
and Low Pressure. Thermochimica Acta, Vol. 512, issue 1-2, pp. 163-169.
9. Zhu, L., Jen, T.C., Yin, C.-L., 2010, " Numerical Investigation of Heat Pipe Cooling
in Drilling Applications," Journal of Mechanical Engineering, Vol. 61, pp. 233-254.
10. Shi, C., Chen, Q., Jen, T.C., Yang, W., 2010, " Heat Transfer Performance of
Lithium Bromide Solution and Falling Film Generator," International Journal of
Heat and Mass Transfer, Vol. 53, issue 15-16, pp. 3372-3376.
11. Lin Zhu, Tien-Chien Jen, Chen-Long Yin, 2010, " Effect of Heat Loss through the
Outer Walls on the Structure of a Micro-Combustor Device, ASME Journal of
Mechanical Design, Vol. 132, Issue 12 (5 pages).
12. Reikher, A., Gerber, H., Pillai, K. and Jen, T.C., 2010, "Natural Convection-An
Overlook Phenomenon of the Solidification Process," Die Casting Engineering,
January issue, pp. 30-33.
13. Zhang, J., Ge, P. Jen, T.C. and Zhang, L., 2009, "Experimental and numerical
studies of AISI1020 steel in grind-hardening," International Journal of Heat and
Mass Transfer, Vol. 52, pp. 787-795.
14. Reikher, A., Gerber, H., Pillai, K. and Jen, T.C., 2009, "Application of One-
Dimensional Numerical Simulation to Optimize Process Parameters of a Thin-Wall
Casting in High Pressure Die Casting," Die Casting Engineering, May issue, pp. 38-
42.
15. Tan, W., Jen, T.C., and Gao, M., 2009 "Medium Earth Orbit and Inclined
Geosynchronous Orbit Satellite Control Strategies Optimization based on the
Function Approximation Method," Proceedings of the Institute of Mechanical
Engineers, Part G. Journal of Aerospace Engineering, Vol. 223, No. 4, pp. 475-
484.
16. Liao, Q. and Jen, T.C., 2008, "Numerical Simulation of Fluid Flow and Heat
Transfer in A Curved Square Duct using Lattice Boltzmann Method." Numerical
Heat Transfer, Part A: Applications, Vol. 54, pp. 451-480.
17. Jen, T.C. and Nemecek, D., 2008, "Thermal Analysis of Wet-Clutch Subjected to A
Constant Energy Engagement," International Journal of Heat and Mass Transfer,
Vol. 51, No.7-8, pp. 215-244.
18. Cui, W., Li, L., Xin, M., Jen, T.C., Liao, Q., Chen, Q., 2008, "An Experimental
Study of Flow Patterns and Pressure Drop for Flow Boiling Inside Microfinned
Helically Coiled Tube," International Journal of Heat and Mass Transfer, Vol. 51,
No.1, pp.169-175.
19. Jen, T.C., Tuchowski, F., and Chen, Y., 2008, "Investigation of Thermosyphon
Cooling for Drilling Operation: An Experimental Study," International Journal of
Transport Phenomena, Vol. 10, No.1, pp. 17-36.
20. Yan, T.Z. and Jen, T.C., 2008, "Two-Phase Flow Modeling of Liquid-Feed Direct
Methanol Fuel Cell" International Journal of Heat and Mass Transfer, Vo. 51, No.5-
6, pp. 1192-1204.
21. Peng, L., Li, Y.R., Liu, Y.J., Imaishi, N., Jen, T.C., and Chen, Q., 2007,
"Bifurcation and Hysteresis of Flow Pattern Transition in A Shallow Molten Silicon
Pool with Cz configuration," Numerical Heat Transfer Part A, Vol. 51, pp. 211-223.
22. Liao, Q., Jen, T.C., Chen, Q., Li, L., and Cui, W., 2007, "Heat Transfer
Performance in 3D Internally Finned Heat Pipe," International Journal of Heat and
Mass Transfer, Vol. 50, pp. 1231-1237.
23. Cui, W. Li, L., Chen, Q. and Liao, Q., Jen, T.C., 2006, " Heat Transfer and
Pressure Drop Experimental Correlations for Air-Water Bubbly Flow," International
Journal of Heat and Mass Transfer, Vol. 49, pp.4417-4423.
24. Pan, L., Jen, T.C., He, C., Xin, M., and Chen, Q., 2006, "Heat Transfer and Bubble
Movement of Two- and One-Sided Heating Subcooled Flow Boiling in Narrow
Channel," ASME Journal of Heat Transfer, Vol. 128, pp.838-842.
25. Gutierrez, G., Cantano, J., Jen, T.C., and Liao, Q., 2006, "Transient Heat Transfer
Analysis on A Heat Pipe With Experimental Validation," International Journal of
Transport Phenomena, Vol. 8, pp.165-179.
26. Cui, W., Li, L., Xin, M., Jen, T.C., Chen, Q., Liao, Q., 2006, "A Heat Transfer
Correlation of Flow Boiling in Micro-Finned Helically Coiled Tube," International
27. Jen, T.C., Pan, L., Li, L., Chen, Q., and Cui, W., 2006,"The acceleration of
Charged Nano- Particles in Gas Stream of Supersonic De-Laval-Type Nozzle
Coupled with Static Electric Field," Applied Thermal Engineering, Vol. 26, pp. 613-
621.
28. Gutierrez, J.G. and Jen, T.C., 2005, "Numerical Analysis of the Vapor Flow in An
Axially Rotating Heat Pipe in Drilling Processes," International Journal of Transport
Phenomena, Vol. 7, pp.131-150.
29. Li, L., Cui, W., Liao, Q., Xin, M., Jen, T.C. and Chen, Q., 2005,"Heat Transfer
Augmentation in 3D Internally Finned and Micro-finned Helical Tube," International
Journal of Heat and Mass Transfer, Vol. 48, pp.1916-1925.
30. Jen, T.C. and Yan, T., 2005, "Developing Fluid Flow and Heat Transfer in a
Channel Partially Filled with Semi-Porous Square Channel," International Journal of
Heat and Mass Transfer, Vol. 48, 00. 3995-4009.
31. Jen, T.C., Chen, Q., Li, L., Cui, W. and Zhang, X., 2005, "Numerical Analysis on
Cold Gas Dynamic Spray Coating Process with Nano- and Micro-size Particles,"
International Journal of Heat a nd Mass Transfer, Vol. 48, pp. 4384-4396.
32. Gu, R. J., Shillor, R. Barber, G., and Jen, T.C. 2004, "Thermal Analysis of the
Grinding Process," Mathematical and Computer Modeling, Vol. 39/9-10, pp. 991-
1003.
33. Jen, T.C., Eapen, S., and Gutierrez, J.G., 2003, "Nonlinear Numerical Analysis in
Transient Cutting Tool Temperatures, " ASME Journal of Manufacturing Science
and Engineering, Vol. 125, No. 1, pp. 48-56.
34. Jen, T.C., Gutierrez, J.G., and Eapen, S., 2003, "Prediction of Transient Cutting
Tool Temperatures," International Journal of Transport Phenomena, Vol. 5, pp. 19-
30.
35. Jen, T.C., and Gutierrez, J.G., 2003, "Analytical Study of Heat Conduction in a
Finite Region due to a Laser Heat Source," International Journal of Transport
Phenomena, Vol. 5, pp. 203-216.
36. Jen, T.C., Yan, T. and Chan, S-H, 2003, "Chemical Reacting Transport Phenomena
in a PEM Fuel Cell," International Journal of Heat and Mass Transfer, Vol. 46, pp.
4157- 4168.
37. Jen, T.C., Eapen, S. and Hwang, G.J., 2002, "Fully Developed Laminar Fluid Flow
in a Rotating Isothermal Isosceles Triangular Channel," International Journal of
Rotating Machinery, Vol. 8, No. 1, 1-12.
38. Jen, T.C., Gutierrez, G., Eapen S., Barber, G., Zhao, H., Szuba, S.,
Manjunathaiah, J., and Labataille, J., 2002, "Investigation of Heat Pipes Cooling in
Drilling Applications Part I: Preliminary Numerical Analysis and Verifications"
International Journal of Machine Tool and Manufacture, Vol. 42, No. 5, pp. 643-
652.
39. Jen, T.C., Jiao, Y., and Hwang, T., 2001, "A Parametric Study of Numerical
Simulation of Solute Redistribution During Transient Liquid Phase Bonding
Process," International Journal of Rotating Machinery, Vol. 7, No. 6, 387-396.
40. Jen, T.C., Gutierrez, J.G., and Eapen, S., 2001, "Numerical Analysis in Interrupted
Cutting Tool Temperatures," Numerical Heat Transfer Part A: Applications, Vol. 39,
No.1, pp.1-20.
41. Jen, T.C. and Jiao, Y., 2001, "Numerical Simulation of Solute Redistribution
During Transient Liquid Phase Bonding Processing for Al-Cu Alloy," Numerical Heat
Transfer Part A: Applications , Vol. 39, No. 2, pp. 123-138.
42. Jen, T.C., and Anagonye, A.U., 2001, "A Transient Tool Temperatures Model in
Metal Cutting," the ASME Journal of Manufacturing Science and Engineering, Vol.
123, No.1, pp. 30-37.
43. Gutierrez, J.G. and Jen, T.C., 2000, "Numerical Simulation of Heat Conduction
Subject to a Time Dependent Laser Source: the Effects of Variable Thermal
Properties", International Journal of Heat and Mass Transfer, Vol. 43, pp. 2177-
2192.
44. Stephenson, D.A., Jen, T.C., and Lavine, A.S., 1997, "Cutting Tool Temperatures
in Contour Turning: Transient Analysis and Experimental Verification," the ASME
Journal of Manufacturing Science and Engineering (formerly, Journal of
Engineering for Industry),Vol. 119, pp. 494-501.
45. Jen, T.C., 1996, "Laminar Forced Convection in the Entrance Region of a Semi-
Porous Channel," ASME Journal of Heat Transfer, Vol. 118, pp. 508-510.
46. Jen, T.C., and Lavine, A.S., 1996, "A Variable Heat Flux Model of Heat Transfer in
Grinding with Boiling," the ASME Journal of Heat Transfer, Vol. 118, pp. 463-
470.44.
47. Jen, T.C., and Lavine, A.S., 1995, "A Variable Heat Flux Model of Heat Transfer in
Grinding: Model Development," the ASME Journal of Heat Transfer, Vol. 117,
pp.473- 478.
48. Jen, T.C., Lavine, A.S., and Hwang, G.J., 1992, "Simultaneously Developing
Laminar Convection in Rotating Isothermal Square Channels," International
Journal of Heat and Mass Transfer, Vol. 35, no. 1, pp. 239-254.
49. Jen, T.C., and Lavine, A.S., 1992, "Laminar Heat Transfer and Fluid Flow in the
Entrance Region of a Rotating Duct with Rectangular Cross-Section—the Effect of
Aspect Ratio," ASME Journal of Heat Transfer, Vol. 114, pp. 574-581.
50. Lavine, A.S. and Jen, T.C., 1991, "Coupled Heat Transfer to Workpiece, Wheel
and Fluid in Grinding, and the Occurrence of Workpiece Burn, " International
Journal of Heat and Mass Transfer, Vol. 34, No. 4/5, pp. 983-992.
51. Lavine, A.S. and Jen, T.C., 1991, "Thermal Aspects of Grinding: Heat Transfer to
Workpiece, Wheel and Fluid," the ASME Journal of Heat Transfer, Vol. 113, pp.
296-303.
52. Hwang, G.J., and Jen, T.C., 1990, "Convective Heat Transfer in Rotating
Isothermal Ducts," International Journal of Heat and Mass Transfer, Vol. 33, No.
9, pp. 1817-1828.
53. Lavine, A.S., Malkin, S., and Jen, T.C., 1989 , "Thermal Aspects of Grinding with
CBN Wheels," CIRP Annals, Vol. 38, No. 1, pp.557-560.

1. Best paper of year of the CIRP, 1989.

Book Chapters
Jen, T.C., Yan, T., and Chen, Q., 2005, "Numerical Simulation Proton Exchange
Membrane Fuel Cell," in Transport Phenomena in Fuel Cell, WIT Press, Ashurst
Lodge, Ashurst, Southampton SO40 7AA, UK.
Liao, Q. and Jen, T.C., 2011, "Application of Lattice Boltzmann Method in Fluid flow
And Heat Transfer", in Computational Fluid Dynamics-Technology and Applications,
Chapter 2, pp. 29-68, Intech publication, July 2011.