Moving grid for large amplitude body motion

Abstract eng:
A new approach is introduced and developed to generate moving grids for large amplitude rigid body motion. The approach can be interpreted as a solid body moving through, and displacing an existing mesh whose connectivity remains fixed. In this method, the elements ahead of the body are separated and reattached along a trajectory so as to preserve a fixed connectivity and maintain mesh validity. The procedure for the rotation is exactly the same where the grid nodes slide on the solid body during the rotation in order to maintain a fixed connectivity during the rotation.

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