|
|
Yuwen Zhang Professor Fellow ASME and Associate Fellow AIAA Mechanical and Aerospace
Engineering Email: zhangyu@missouri.edu
|
||||||||||||||||||||||
|
Liquid-vapor phase change
heat transfer in micro grooves and miniature channel is solved using VOF model. We also developed a series
theoretical models to (a) simulate the behavior of liquid slugs and vapor
plugs in both unlooped and
looped Pulsating Heat Pipes (PHPs), (b) model thin
film evaporation and condensation in the heating and cooling sections, and
(c) investigate oscillatory flow in a U-shaped miniature channel, as well as PHPs with arbitrary number of turns. The
effect of the number of turns, length of the heating and cooling sections,
charge ratio on the oscillatory flow in the PHPs were
investigated. The following figure shows oscillation of liquid slugs in a PHP with 10 turns. We are in the process
of developing detailed analytical/numerical models predicting evaporation and
condensation of nanofluid occurring in the oscillatory flow in PHPs.
Oscillation of liquid slug in a Pulsating Heat Pipe
(n=10) Selected
Relevant Publications Damronglerd, P., and Zhang, Y., “Transient
Fluid Flow and Heat Transfer in a Porous Structure with Partial Heating and
Evaporation on the Upper Surface,” Journal
of Enhanced Heat Transfer, Vol. 13, No. 1, pp. 53-64, 2006. Zhang, Y., and
Faghri, A., “Oscillatory
Flow in a Pulsating Heat Pipes with Arbitrary Numbers of Turns,” AIAA Journal of Thermophysics and
Heat Transfer, Vol. 17, No.3, pp. 340-347, 2003 Shafii, M. B., Faghri, A., and Zhang, Y., “Analysis of Heat
Transfer in Unlooped and Looped Pulsating Heat Pipes,“ Int. J. Numerical Methods for
Heat and Fluid Flow,Vol.
12, No. 5, pp. 585-609, 2002. Zhang, Y., Faghri, A., and Shafii,
M. B., “Analysis
of Liquid-Vapor Pulsating Flow in a U-shaped Miniature Tube ,” Int.
J. Heat Mass Transfer , Vol. 45, No. 12, pp. 4501-4508,
2002 Zhang, Y., and Faghri, A., “Heat Transfer in a Pulsating Heat Pipe with Open
End,” Int. J. Heat Mass Transfer, Vol. 45. No. 4, pp. 755-764, 2002. Shafii, M. B., Faghri, A., and Zhang, Y., “Thermal Modeling
of Unlooped and Looped Pulsating Heat Pipes,“ ASME J. Heat Transfer, Vol. 123, No. 6, pp. 1159-1172,
2001. Zhang, Y., and Faghri, A., “Numerical Simulation of Condensation on a
Capillary Grooved Structure,“ Numerical Heat Transfer Journal, Part A, Vol. 39, pp.
227-243,2001. Zhang, Y., Faghri, A.,
Shafii, M. B., “Capillary
Blocking in Forced Convective Condensation in Horizontal Miniature Channels,” ASME J. Heat Transfer, Vol. 123, No. 2, 2001.
Return to Research. |
