Firstly, five kinds of architectural model are analyzed on flow field of the diffuser channel, such as the cubic column, slant four prism, four trapezoid prism, semi cylindrical and flat plate diffuser buildings. 首先,对于立方柱、斜四棱柱、梯形四棱柱、半圆柱、半圆柱加平板型等几种扩散体建筑模型的扩散体通道的流场进行了模拟分析。