Induced by the high-speed feed jet flow, the solid particles above the feed nozzle tended to flow down, and a reverse flow zone was formed along the riser wall.

受喷嘴区高速射流的影响，喷嘴上方固体颗粒呈向下流动趋势，形成一个诱导回流区域。

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Besides, a notable vortex rope and a reverse flow structure exist in the draft tube in smaller wicket gate openings, which can easily lead to the instability in operation of the pump-turbine.

此外，发现开度较小时尾水管内存在明显的涡带和回流涡结构，容易导致机组运行的不稳定；

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This paper proposes a three-dimension reverse design method of blade based on turbine according to the flow parameters and revolution of pump.

提出了按水泵给定流道参数和转数，从水轮机方向计算叶型的全三维逆向设计方法。

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One aspect of our prolonged trade deficit that does seem problematic is that it reflects a flow of capital to a rich country from poorer countries, the reverse of the text-book model.

FORBES: We Need Demand, Not Protectionism

The cash flow available for stocks is as least a trillion bucks as individuals and corporate pension funds reverse course and move back to an historical norm on debt-equity ratio composition.

FORBES: When And Why The Market Makes New Highs