Classifying the real and imaginary part of the Euler equation proves that the selection of structure indexes will affect largely depth parameter or depth location of the source but less lateral parameter or horizontal location of the sourc.

CFD simulation for across-wind aerodynamic parameters of a special-shaped tall chimney

The finite element method(FEM) model of computing the transverse elastic properties of unidirectional fiber-reinforced composites included three-dimension,two-dimension plain strain,and representative volume cell models and so on.

Analysis of ship parametric rolling in head sea;

A numerical simulation method based on ITTC recommendation was used to investigate the occurrence and magnitude of parametric rolling in longitudinal regular waves.

Parametric rolling is a kind of the resonance phenomena of ship motions, caused by the periodical fluctuations of stability parameters of ships in waves.

In computer controlling system,the concept of horizontal diamond number and vertical diamond number is proposed,new mathematics model is derived,and derived new technique of locally densified mesh is put forward.