Enhancement of laminar flow heat transfer with single/doubleinclined ribs for unilaterally-heated channel  

作　　者：WANG XiangYu XU XiangHua LIANG XinGang 

机构地区：[1]School of Aerospace Engineering,Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,Tsinghua University,Beijing 100084,China

出　　处：《Science China(Technological Sciences)》2023年第7期2108-2118,共11页中国科学（技术科学英文版）

基　　金：supported by discipline construction fund of Tsinghua University。

摘　　要：To deal with the aerodynamic heating on the aircraft surface,a potential solution is to utilize liquid cooling via the channels in part of the fuselage.This is a typical problem of flow and heat transfer in channels with unilaterally-heated surfaces.The enhancement of heat transfer in the channel is significant due to the high heating flux.The optimal velocity and temperature fields are obtained first based on the field synergy optimization method.Four rib configurations are proposed to produce the longitudinal vortices suggested by the optimal velocity field.The flow and heat transfer characteristics of different rib configurations are obtained by numerical simulation.The numerical simulations show that the heat transfer enhancement of the rib configurations are quite different,but the pressure drop increases similarly in the laminar flow range of Re = 500–1500.The mechanism of heat transfer enhancement with the single/double-inclined ribs for the unilaterally-heated channel is analysed.The best enhancement of geometric parameter among the investigated parameters such as the angle,length,radius and the spacing of the ribs is obtained.

关 键 词：heat transfer enhancement field synergy optimization inclined ribs unilaterally-heated channel 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]