基于多层动网格技术的流固耦合方法研究

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祸合.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.

Study on the fluid solid coupling method based on multi-movinggrids technique

A fluid solid coupling case study is presented of one transonic fan blade with the first twist mode with the loosely coupled model. 3-D linear interpolation is applied with the commercial software ANSYS and CFX to the data exchange on the inter-surface in the sequence-coupled structure and fluid flied. A new method multi-moving grids technique guarantees the structure movement out off the restriction of the fluid meshes size. The simulation result is reasonable and has some reference value to the research a...