Finally, in view of vortex sheet, the formula of virtual mass has been re-derived.
最后，本文从涡层的角度重新推导了翼型虚拟质量计算公式。
The virtual mass of the spring was brought out firstly and the dynamic model was established sequentially.
首先确定多股螺旋弹簧的虚拟质量，建立了多股螺旋弹簧的动态模型。
The interphase forces on the propagation were investigated, including wall shear stress, virtual mass force and drag force.
着重分析了相间作用力，包括壁面剪切应力、虚拟质量力、拖拽力，对压力波传播速度和衰减的影响。
Then the relationship among vibration frequency of the plate in water and that in vacuo and the Nondimensionalized Added Virtual Mass Incremental (NAVMI) is obtain by utilizing Rayleigh method.
进而应用瑞利方法得到了薄板水中振动频率与真空中振动频率、无量纲附加虚质量增量之间的关系。
Then the relationship among vibration frequency of the plate in water and that in vacuo and the Nondimensionalized Added Virtual Mass Incremental (NAVMI) is obtain by utilizing Rayleigh method.
进而应用瑞利方法得到了薄板水中振动频率与真空中振动频率、无量纲附加虚质量增量之间的关系。
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