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论述了界面上的数据交换方法和时间推进格式在流体动力学(CFD)和结构动力学(CSD)耦合求解非线性气动弹性问题中的关键作用;改进了CFD/CSD耦合系统,包括基于边界元方法设计了CFD和CSD耦合界面的数据转换方法,该方法可在同一映射矩阵处理结构响应和非定常气动载荷转换,保证了耦合边界上的能量守恒;改进了一种松耦合方法流程,在保持模块化基础上提高了计算精度和效率。最后将本文方法应用于二维位移外插算例和A-GARD445.6机翼的动响应分析中,结果表明本文方法具有较高精度。
The key role of data exchange method and time advancement format in the interface to solve the nonlinear aeroelastic problem through CFD and CSD is discussed. The CFD / CSD coupling system is improved, including the boundary element Methods The data conversion method of CFD and CSD coupling interface is designed. The method can deal with the structural response and unsteady aerodynamic load transfer in the same mapping matrix to ensure the conservation of energy on the coupled boundary. A loosely coupled method flow is improved, Modularity improves calculation accuracy and efficiency. Finally, the proposed method is applied to two-dimensional displacement interpolation and the dynamic response analysis of A-GARD445.6 wing. The results show that the proposed method has high accuracy.