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从弱耦合的角度出发,对某型跨声速风扇叶片做了第一阶扭转振动模态下的流固耦合验证计算.采用三维线性插值方法,通过商用软件ANSYS和CFX实现了计算结构动力学和计算流体力学之间的数据交换,从而使固体域与流体域顺序耦合.应用多层动网格技术解决了固体域模型在流场中运动受到流体网格尺寸制约的问题.计算结果表明,模拟结果可以预估叶轮系统的模态气动阻尼系数,具有工程参考价值.
From the viewpoint of weak coupling, the fluid-solid coupling verification of a transonic fan blade under first-order torsional vibration mode is done. The three-dimensional linear interpolation method is used to calculate the structural dynamics and the dynamic response of the transonic fan blade through commercial software ANSYS and CFX Computational fluid dynamics data exchange, so that the solid domain and the fluid field sequence coupling.Using multi-layer moving grid technology solves the solid domain model in the flow field is subject to fluid grid size constraints.The results show that the simulation The result can predict modal aerodynamic damping coefficient of the impeller system, which is of engineering reference value.