## A high-order flux reconstruction method for 3D mixed overset meshes.(English)Zbl 07211840

Summary: The use of overset meshes can significantly simplify grid generation for complex configurations, and is particularly desired for moving boundary problems as remeshing is often unnecessary. In the present study, we develop a high-order flux reconstruction (FR) solver for mixed overset meshes including the near-body, and background meshes. The main objective is to achieve uniformly high order accuracy in the entire computational domain on both the near body and the background grids. Two different approaches to handle the overset interfaces are evaluated for accuracy, efficiency and robustness. Waves passing across the overset interfaces are tested with both smooth and discontinuous waves. In the present study, we focus on non-moving boundary problems, and demonstrate the overall methodology for steady and unsteady flow problems.

### MSC:

 76-XX Fluid mechanics

### Software:

CMPGRD; GitHub; MOOD; SUGGAR; meshCurve; OBBTree
Full Text:

### References:

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