利用三维边界拟合坐标变换技术，可将具有任意曲面边界的三维物理区域变成长方体计算区域，在该区域中形成单位立方体差分网格。
By means of BFCT, a three-dimensional physical space with arbitrary configuration can be transformed into standard cube, forming the unit cubic grid.
该文利用大涡模拟，对可压缩流体绕经安装在方管底部的长方体和矩形体的绕流现象进行了三维数值模拟。
The large eddy simulation is applied to simulate a 3-d square channel compressible flow around a wall-mounted rectangle cylinder.
采用试验和三维紊流模型相结合，对长方体边墩在不同纵向宽度条件下的回流长度变化规律进行了研究。
The relationship between the longitudinal dimension of an abutment and the recirculation length behind it is established based on the experimental data and the numerical results using a 3D model.
采用试验和三维紊流模型相结合，对长方体边墩在不同纵向宽度条件下的回流长度变化规律进行了研究。
The relationship between the longitudinal dimension of an abutment and the recirculation length behind it is established based on the experimental data and the numerical results using a 3D model.
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