密度锁内无扰动时稳态温度场分析

实验模拟了密度锁内无扰动时稳态温度场分布。结果发现,稳态温度分布曲线上存在一个温度分层结束点;它是导热层与恒温层的分界,只有当温度分层结束点在密度锁内才能有效地抑制传热。应用半无限大平板导热模型、一维等截面直肋稳态导热模型和Fluent流体计算软件对无扰动时稳态温度场分布进行了理论计算。结果表明,半无限大平板导热模型是计算密度锁内无扰动时稳态温度场分布和温度分层结束点位置的最佳方法。

Analysis on Temperature Distribution in Density Lock on Steady State without Disturbance

Temperature distribution on steady state without disturbance in density lock is simulated ex-perimentally in this paper, and the temperature stratification end point is discovered on the temperature curve on steady state. It separated the heat conduction layer and homoiothermy layer. Only when the temperature stratification end point is in the density lock, heat can be restrained effectually. The temperature field is simulated with three methods. The first one is a method of semi-infinite flat-panel heat conduction, the second one is a method of one dimensional steady state conduction in constant cross-section straight-fin, and the last one is calculated using Fluent calculation software. The results indicated that the method of semi-infinite flat-panel heat conduction is the best one to calculate the distribution of temperature and location of temperature stratification end point.