用边界单元法解二维非稳定温度场

采用加权余量法，通过严格和详细的数学推导转化工作，建立了各向同性体二非稳定温度场的积分方程，边界积分方程及其离散型方程，并将偏微分方程问题转化为一个常系数的常微分方程问题，为便于计算，对其中出现的域积分进行了的向边界积分的转化处理工作，给出了便于编程的计算格式和几何可供选用的坐标函数。

Two dimentional Unsteady Temperature Field by Boundary Element Method

After the detailed mathematical deductions were made by weighed residue method, the integral equation, boundary integral equation and their discrete equations are set up and the partial differentiational equations are converted to differentiational equations with constant coefficient. In order to make the computations easier, the domain integrals are replaced by the equivalent boundary integrals, some easy for programming computation patterns and three distinct classes of coordinate functions are offered.