受热表面被另一物体周期覆盖的受热体温度场求解

Solution of Temperature Field of an Object with Its Heated Surface Periodically Covered by Another One

本文在用有限单元法求解非稳态温度场时,将燃气温度、换热系数与边界都在时间域内离散化,建立逼近真实物理过程的离散化方程.并通过优化方法反求换热系数,大大地提高了计算精度,为求解这种物体的温度场提供了新途径。

In its solution with FEM, the unsteady temperature field is taken into consideration by discretaizing temperature of gases the heat transfer coefficient and boundary in time domain, and by deriving the discretizcd equation for approximating the true physical process. Optimization is used to obtain the heat transfer coefficient, thus greatly improving the accuracy in its calculations. It provides a new approach to solution to temperature field of such an object.