航空学报2025，Vol.46Issue(12)：145-162,18.DOI:10.7527/S1000-6893.2025.31425
一种适用于流固耦合模拟的高精度气动载荷传递方法
A high-precision aerodynamic load transfer method for fluid-solid coupling simulation
摘要
Abstract
In numerical simulations of fluid-solid coupling based on partitioned method,the fluid and solid solvers uti-lize independent grids for computations,so the grids are typically non-matching at the coupling interface.Physical quantities such as aerodynamic forces need to be transferred at the interface,and their conservation is essential to the accuracy of the simulation solutions.To reduce the error of aerodynamic force transfer,this paper proposes a data transfer method based on local surface degradation and accurate cell integration.In this method,a generalized two-dimensional coordinate system is initially constructed based on the solid mesh.Subsequently,the fluid mesh is pro-jected,and the intersection area is calculated to determine the contribution of the fluid cells to the solid nodal force.The method has been demonstrated to be effective in achieving accurate and efficient data transfer between non-matching meshes of varying types.Compared to the traditional method,the proposed method can essentially ensure the comprehensive conservation of force,facilitate near-zero error aerodynamic force transfer,and result in a smoother aerodynamic force distribution.Additionally,the error of the momentum can be reduced by more than one order of magnitude.Finally,the influence of different data transfer methods on the fluid-solid coupling results are evaluated through the simulations of Rotor67,STCF4 standard turbine and Hirenasd wing which indicate that the inter-face data transfer approach proposed in this paper is more precise in calculations of solid deformation and aerody-namic damping.关键词
流固耦合/非匹配网格/数据传递/气动力守恒/单元积分Key words
fluid-solid coupling/non-matching mesh/data transfer/aerodynamic force conservation/cell integral分类
航空航天引用本文复制引用
杜中宇,杜鹏程,宁方飞..一种适用于流固耦合模拟的高精度气动载荷传递方法[J].航空学报,2025,46(12):145-162,18.基金项目
国家科技重大专项(J2022-Ⅳ-0010-0024,J2022-Ⅱ-0001-0004) National Science and Technology Major Project(J2022-Ⅳ-0010-0024,J2022-Ⅱ-0001-0004) （J2022-Ⅳ-0010-0024,J2022-Ⅱ-0001-0004）
