旋转翼型冲击水介质动态模拟研究

简要介绍了旋转翼型声辐射的研究现状，建立了NACA系列翼型以及环形水域模型。对翼型采取刚性体，对水介质采用Gmneisen状态方程来定义材料的压力，对模型采用8节点实体单元进行网格划分。采用ALE算法模拟了水域单元的声压值，尤其是翼型在同一起始和终止时间的速度一时间曲线（直线、正弦线、抛物线以及正切线）被研究了。对同一单元在不同旋转方式下的声压值以及同一旋转方式下不同单元的声压值进行了比较。

Dynamic Simulation Study on Rotating Aerofoil Impacting Water Medium

The present state of study on the sound radiation of rotating aerofoil is simply introduced The models of NACA series aerofoil and annular fluid are built. The rigid material is adopted in aerofoil and the Gruneisen equation of state is used to define the pressure of the water medium, both models is meshed by eight nodes solid elements. The sound pressure of the water unit is simulated by using ALE algorithm. In particular, four different velocity-time curves with the same starting and ending time and velocity of aerofoil movement （straight line, sine curve, parabolic curve, tangent curve） are developed The different kinds of sound pressure of the same element with different rotating style and the different elements＇ with the same rotating style are compared with each other.