本文描述由一个局部内热源和外部加热同时作用引起的封闭空腔内非稳态、二维、层流自然对流换热的数值分析结果。
Numerical analysis is made for the unsteady and steady, two-dimensional laminar natural convection in an enclosure caused simultaneously by the external heating and a local internal heat source.
在利用热边界层减阻的电加热管道中，为了计算管道加热的热流量，除了热边界层流动的流体传热外，还需考虑整个管道的热损失。
The many kinds of heat losses of fluid flow on the temperature boundary layer in pipeline are a part of the total heat flux.
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