分布式脉冲热源的冷却模型与数值分析  

Cooling model and numerical analysis of distributed pulse heat source

作　　者：黄志锋[1] 舒水明[1] 

机构地区：[1]华中科技大学能源与动力工程学院,湖北省武汉市430074

出　　处：《深冷技术》2006年第F09期25-31,共7页

摘　　要：建立了分布式脉冲热源的物理模型,并对其进行了数值模拟和计算,得到了热源各层的中心点在冷却过程中前两分钟、前两小时及全过程的温度变化,计算得出整个热源的冷却时间。结果表明分布式脉冲热源的冷却是个比较缓慢的过程,在冷却过程后期,对冷却速度起决定性作用的是热源所处的温度梯度而非导热性能。A physical model of the distributed pulse heat source was set up for numerical simulation and calculation. The temperature changes of every layer＇s central points of heat source in the first two minutes, the first two hours and the whole course of the cooling course have been obtained for predicting the cooling time of the whole heat source. The result indicates that a cooling of the distributed pulse heat source is a slow course. During later stage of the cooling course, the temperature gradient where that heat source locates, instead of heat conduction performance, plays a decisive role to the cooling speed.

关 键 词：分布式脉冲热源 冷却模型 数值分析 

分 类 号：TQ320.52[化学工程—合成树脂塑料工业]