Efficient Computational Fluid Dynamics Evaluation of Small-Device Locations with Automatic Local Remeshing
Yasushi Ito, Mitsuhiro Murayama, Kazuomi Yamamoto, Alan M. Shih, Bharat Kumar Soni · AIAA Journal · 2009
This paper describes a new efficient automatic remeshing method for three-dimensional hybrid meshes for viscous flow simulations to accommodate the meshes with changes of small devices quickly and easily. This remeshing method has two notable advantages. First, hybrid meshes can be generated automatically from a baseline mesh when the small devices are moved and/or deformed. This enables shape optimization techniques to find better models quickly, because tens or hundreds of meshes are usually required during the process. Second, the updated hybrid meshes are the same as the baseline mesh except for elements around the small devices. Their effect can be evaluated more accurately. Solution data from the baseline mesh can be shared with new hybrid meshes (e.g., as an initial condition to expedite the convergence of computational simulations). The remeshing method is applied to the Japan Aerospace Exploration Agency's high-lift-configuration standard model with a nacelle chine in different locations to demonstrate its capability. Computational simulations are also performed to further discuss the effectiveness of the remeshing method.