多层热防护服一维瞬态导热优化模型

One-Dimensional Transient Thermal Conductivity Optimization Model for Multi-layer Thermal Protective Clothing

利用多层热防护服一维瞬态导热优化模型来完整阐述热传递过程,在环层均匀材料的基础上,根据导热理论,首先将多层导热模型解耦成单层导热模型,把内、外表面的边界条件归纳成定温边界等边界条件,并不断细化层数。利用COMSOL软件进行仿真,得到各个厚度位置的每秒具体的温度值,推导了多层圆筒非稳态传热的温度分布,以此为基础探究防热服材料的最佳厚度,即节省材料成本的同时保障防热服的隔热性能。通过固定某一层的厚度,不断调整另一层的厚度,观察温度值分布,然后据此再调整之前固定厚度层的材料厚度,直到符合所定的标准为止。

Based on the one-dimensional transient thermal conductivity optimization model of multi-layer thermal protective clothing,the paper expounds the heat transfer process completely.And on the basis of the uniform material of the ring layer,according to the theory of thermal conductivity,firstly,the multilayer thermal conductivity model is decoupled into a single layer thermal conductivity model,and the boundary conditions of the inner and outer surfaces are summed up into boundary conditions such as fixed temperature boundary,and the number of layers is continuously refined.Using COMSOL software to simulate,the specific temperature value per second of each thickness position is obtained,and the temperature distribution of unsteady heat transfer of multi-layer cylinder is deduced,and the optimum thickness of heat-proof clothing material is explored on the basis of this,that is,saving material cost while ensuring the thermal insulation performance of heat-proof clothing.By fixing the thickness of one layer,constantly adjusting the thickness of the other layer,and observing the distribution of the temperature value,the material thickness of the previous fixed thickness layer needs to be adjusted accordingly until it meets the established standard.