具体热源的湍流对流中热量传递势容耗散的界  

BOUNDS ON DISSIPATION OF HEAT TRANSPORT POTENTIAL CAPACITY IN TURBULENT CONVECTION WITH VOLUME HEAT SOURCE

作　　者：魏琪[1] 

机构地区：[1]苏州大学物理科学与技术学院,江苏苏州215006

出　　处：《工程热物理学报》2008年第8期1354-1356,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.50576061)

摘　　要：本文从数学上确定了具体热源的湍流对流中时均热量传递势容耗散的上界和下界,该上界和下界反映了体热源对湍流对流中热量传递势容耗散的影响。其上界表明具体热源的湍流对流中时均热量传递势容耗散不会大于导热情况下时均热量传递势容耗散;其下界表明,给定湍流流场的统计特性,即在某种意义上,粘性耗散一定,这时时均热量传递势容耗散可能达到的下界依赖于体热源和速度的时均值。The upper and lower bounds on the dissipation of time average heat transport potential ca- pacity in turbulent convection with volume heat source are determined mathematically,which reflects the effect of volume heat source on the dissipation of heat transport potential capacity in turbulent convection.The upper bound shows that the dissipation of time average heat transport potential capacity in turbulent convection with volume heat source can be not larger than that in heat conduc- tion.The lower bound sh...

关 键 词：湍流对流 体热源 热量传递势容耗散 

分 类 号：TK124[动力工程及工程热物理—工程热物理]