正压涡度方程来做一个简单的天气预报过程，其中用到了迭代法来求解赫姆霍兹方程-Barotropic vorticity equation to do a simple weather forecast process, which uses iterative method to solve Helmholtz equation

用边界元方法求解赫姆霍兹方程的程序，用fortan编的-Boundary element method to solve the Helmholtz equation procedures, compiled by fortan

抛物方程是由赫姆霍兹方程推导而来，在计算大区域电磁传播有较大的优势，本程序是二维的情况。-Parabolic equation is derived the Herm Holtz equation, in the calculation of large areas of electromagnetic propagation has a greater advantage, the program is a two-dimensio

球坐标下的赫姆霍兹方程在matlab下求解(Solving the Herm Holtz equation under the spherical coordinates under Matlab)