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1·Meridional flow problems in radial flow turbo-machinery are solved by using the method of boundary elements.

采用边界元法求解径流式叶轮机械子午流动问题。

2·In the steady four-waves flow, the mean meridional circulation is indirect, with a descending motion near the cold source and an ascending motion near the heat source, as shown in Fig.

维持四波时，平均经圈环流为靠近热源处下沉和靠近冷源处上升的反环流。

3·The meridional through-flow in a mixed flow hydraulic machine is calculated by finite element method.

本文应用有限元方法计算了混流式水轮机叶轮通道中的流场，并由计算机自动绘出流网图。

4·The second-order shear of the basic flow represents an instable factor for the symmetric disturbance, and drives the unstable mesoscale disturbance to travel in the meridional direction;

基流二次切变对于中尺度对称扰动来说是一个不稳定因子，并且驱动不稳定的中尺度对称扰动在南北方向传播；