The 3-D transient internal fluid of the exhaust manifold has been simulated with the inlet and outlet boundary conditions calculated by the thermodynamics.
通过热力学计算得到排气歧管的入口和出口边界条件，计算排气歧管的三维瞬态内流场；
When the QUICK scheme is applied, however, the difference between the results under the two kinds of outlet boundary conditions depends on the outlet boundary position.
对采用QUICK格式的计算，两种出口边界条件的差别与出口界面位置有关。
The moving reference frame is used in the impeller region and the boundary conditions are velocity inlet and pressure outlet.
在计算时对于叶轮区域采用旋转参考系的方式，边界条件分别是进口速度边界条件以及出口压力边界条件。
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