计算平面环形腔体内的自然对流问题，不可压缩流动，圆柱坐标系，压力速度采用simple算法解耦。计算结果使用tecplot 查看(A numerical simulation of natural convection in the annulus between horizontal concentric cylinders; incompressible flow; the pressure and velocity are uncoupled with SIMPLE method; cyli

不可压稳态径向滑动轴承润滑数值计算方法-程序(Numerical calculation method for lubrication of incompressible steady state journal bearing)

二维波动方程数值计算（关键：怎么运用i,j,k三个指标建立循环） ，对有限差分法的推导(Two dimensional wave equation numerical calculation (key: how to use I, J, K three indicators to establish cycle), the derivation of the finite difference method.)