The separation flow is three dimensional in hydraulic machine. The pressure gradient in cross direction produces secondary flow in boundary layer.
水力机械的分离为三维流动，三维流动的侧向压力梯度产生边界层的二次流动。
The velocity amplitude distributions of the oscillatory flow outside the boundary layer are measured at seven cross-sections along the horizontal, the vertical, and the bent sections respectively.
对于水平直管段上底面及下底面各三个截面，测量了边界层内振荡流速的振幅分布及相位分布。
The mathematic model and boundary conditions for a finned cross-flow heat exchanger were described.
给出了无量纲换热能量方程组及边界条件和初始条件。
The mathematic model and boundary conditions for a finned cross-flow heat exchanger were described.
给出了无量纲换热能量方程组及边界条件和初始条件。
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