A High-Order Unstructured Mixed Method for Aerodynamic Applications
نویسندگان
چکیده
A flow solver based on a mixed mesh paradigm is developed for resolving flows in a high-order accurate manner. The proposed mesh topology involves unstructured tetrahedral/prismatic mesh in the near-body region and adaptive Cartesian-based unstructured mesh in the off-body region. The body-conforming near-body unstructured mesh offers a great flexibility in treating complex geometries, and also ensures proper mesh resolution for capturing the boundary layer. For the Cartesian mesh in the off-body region, a high-order accurate WENO scheme was adopted to better resolve the detailed flow features. A multi-level mesh adaptation scheme with a tree-based data structure was also employed directly on the Cartesian cells to further enhance the accuracy of the solution. To transfer the flow information between the two mesh topologies, an overset mesh technique was applied. The accuracy and performance of the flow solver were validated for fixedwing and rotary-wing configurations.
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