HEAT TRANSFER IN PLATE-FIN SINUSOIDAL DUCTS WITH FINITE FIN CONDUCTANCE
Laminar forced flow and heat transfer in plate-fin sinusoidal ducts encountered in compact heat exchangers are investigated. The flow is hydrodynamically fully developed, but developing thermally. The plate is under uniform temperature conditions and the heat fluxes on two fins are distributed in a skew-symmetric manner. Boundary-fitted coordinates are used to transform the sinusoidal duct cross section to a square computational domain. Heat conduction in the fin and convection in the fluid are analyzed simultaneously as a conjugate problem. Various duct aspect ratios from 0.2 to 5.0 are considered and the fins have different conductance parameters from 0 to infinitely large. The temperature profiles in the fluid and in the fins are obtained to get some insight into the heat transfer interactions between the fins and fluid. Nusselt numbers in the developing region, and the fully developed values for various aspect ratios and fin conductance parameters are obtained, which can be used in estimation of heat transfer characteristics in plate-fin compact heat exchangers with fins of various thermal conductivities and thicknesses.
L. Z. Zhang
Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Education Ministry, School of Chemical and Energy Engineering, South China University of Technology, Guangzhou, Guangdong 510640, CHINA
国际会议
首届亚洲计算传热与计算流体国际会议(2007 Asian Symposium on Computational Heat Transfer and Fluid Flow)
西安
英文
2007-10-08（万方平台首次上网日期，不代表论文的发表时间）