Comparative study of over set grid generation method and body fitted grid generation method with moving boundaries

In this paper, the received wave at the observation point is calculated when observation point moves. It can be shown that the frequency of the received wave is shifted. To verify the over set grid generation method, numerical results are compared with the body fitted grid generation method and the theoretical results. Good agreements are obtained in these three results. The over set grid generation technique is easier to use for the moving boundary problems. We believe that these numerical techniques will have great promises for the analysis of the moving boundary problems in electromagnetic field.