摘要
对高温换热设备管口区的传热进行了深入的分析。采用有限差分数值分析方法着重研究了管口区域内换热管与管板胀接面上接触热阻对管口区传热的影响，得到了管口区中的温度分布，并进行了相应的传热机理分析；还与未考虑接触热阻时的计算结果进行了比较。
Heat transfer in the tube-mouth region of high temporature heat exchangeequipment was further analysed. The finite difference method(FDM)was employed for investigat-ing emphatically the effects of contact thermal resistance on heat transfer.Temperature distributionin the tube-mouth region with the different contact thermal resistance was found.The computation-al results were compared with that which were obtained with no contact thermal resistance,and thecorresponding heat transfer mechanism was fully analysed.
出处
《重庆大学学报（自然科学版）》
CAS
CSCD
1994年第1期40-45,共6页
Journal of Chongqing University
基金
国家自然科学基金
关键词
换热器
热传导方程
接触热阻
high temperature
heat exchanger
heat conduction
composite material
con-tact thermal resistance
numerical analysis
