Research and application of high robust automatic mesh deformation technique

High robust automatic mesh deformation technique is critical for solving the unsteady flow problem including moving boundary. In this paper, an improvement strategy based on mesh quality parameter feedback was proposed, which can equip the mesh deformation technique with high robustness. Without loss of generality, we taken the elasticity-based technique proposed of Löhner and mesh quality parameter of Baker as an example. Based on rotating motion of NACA 0012 airfoil in wide-range, we have verified the high robustness of this improvement strategy by contrasting with classical elasticity-based technique. Then, the improved elasticity-based technique was applied to simulate the pitching oscillation of NACA 0012 airfoil and compared with experimental datas. Results show this improvement strategy based on mesh quality parameter feedback can enhance the robustness of automatic mesh deformation technique, which will provide better support for solving the unsteady flow problem.