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Space–Time Slip Interface (ST-SI) method

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The ST-SI method can handle spinning structure of subdomains without remeshing.

The method is intended for fluid-structure interaction (FSI) analysis where one or more of the subdomains contain spinning structures, such as the rotor of a wind turbine, and the subdomains are covered by meshes that do not match at the interface and have slip between them. The mesh covering a subdomain with the spinning structure spins with it, thus maintaining the high-resolution representation of the boundary layers near the structure.
See more details [49].