...桨的滑流进行数值模拟,常用的方法是基于动量理论的作用盘/激励盘模型[1-4],螺旋桨被近似为一个假想的无厚度作用盘(actuator disk),气流在流经该盘时,会产生一个压强的跳跃.该模型的优点是简单、计算量小.
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The N-S equations with adoption of an actuator disk model are used to simulate the effect of turbo-propeller slipstream on high-lift systems.
螺旋桨模型简化为一个激励盘，即一个无厚度可穿透的圆盘，以给定的圆盘拉力载荷，即压强差来模拟螺旋桨滑流的效果。
As the wind strikes the actuator disk on the upwind side, the pressure rises there, and the wind is deflected away from the disk, causing a large wake downstream of the disk.
当风力在逆风侧冲击促动盘时，那里的压力上升，并且风力从盘转向离开，引起盘下游的较大尾流。
A new returnable actuator disk of metal seal structure butterfly valve was presented, and its principle, force analysis, characteristic of the actuator were discussed as well.
提出了一种双向压金属硬密封蝶阀蝶板可逆回转机构，讨论了可逆回转机构的工作原理、受力分析及特点。
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