Progress Toward Overset-Grid Moving Body Capability for USM3D Unstructured Flow Solver | Zendy

Mohagna J. Pandya | Zendy; Neal T. Frink | Zendy; Ralph Noack | Zendy

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Progress Toward Overset-Grid Moving Body Capability for USM3D Unstructured Flow Solver

Author(s) -

Mohagna J. Pandya,

Neal T. Frink,

Ralph Noack

Publication year - 2005

Publication title -

17th aiaa computational fluid dynamics conference

Language(s) - English

Resource type - Conference proceedings

DOI - 10.2514/6.2005-5118

Subject(s) - solver , unstructured grid , computer science , grid , computational science , flow (mathematics) , parallel computing , computational fluid dynamics , mesh generation , aerospace engineering , mechanics , engineering , programming language , finite element method , physics , geometry , mathematics , structural engineering

A static and dynamic Chimera overset-grid capability is added to an established NASA tetrahedral unstructured parallel Navier-Stokes flow solver, USM3D. Modifications to the solver primarily consist of a few strategic calls to the Donor interpolation Receptor Transaction library (DiRTlib) to facilitate communication of solution information between various grids. The assembly of multiple overlapping grids into a single-zone composite grid is performed by the Structured, Unstructured and Generalized Grid AssembleR (SUGGAR) code. Several test cases are presented to verify the implementation, assess overset-grid solution accuracy and convergence relative to single-grid solutions, and demonstrate the prescribed relative grid motion capability.

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