A Fully-Coupled Approach to Simulate Three-Dimensional Flexible Flapping Wings

Tao Yang, Mingjun Wei
2013 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition   unpublished
In this study, a fully-coupled approach is used to simulate three-dimensional highly-flexible flapping wings interacting with the surrounding fluid flow. In this approach, the elastic body and its interaction with the fluid are implemented as body/surface force terms. In this way, the fluid and solid can be solved by a combined and modified form of typical Navier-Stokes equations. The motion trajectory is defined similarly by adding another bodyforce term using direct-forcing type of Immersed
more » ... type of Immersed Boundary method. The advantage of solving a combined fluid-solid equation in a global Eulerian framework is that the solution of fluid, solid, and their interaction can be obtained in a monolithic manner and we avoid any sub-step iterations. The current extension of algorithm to three-dimensional configuration is based on our earlier work in two-dimensional setup. After extensive benchmarks in 2D and 3D, rigid and flexible cases, we eventually apply the algorithm on solving three-dimensional flexible flapping wings.
doi:10.2514/6.2013-864 fatcat:cwxqjgi2xzd5djekmi4xduccpy