Solving Fluid/Rigid body Interaction Problem by a Discontinuous Galerkin Level Set Method
نویسندگان
چکیده
We consider problems involving high-speed moving rigid objects in a fluid flow. Instead of a more traditional deformable mesh approach, we describe a novel fixed mesh approach which use a level set function to implicitly track the fluid-solid interface, therefore no mesh motion or modification is required. The interface boundary conditions are also captured implicitly by combining a Ghost Fluid technique with the level set approach. This fixed mesh approach is a much more efficient than moving mesh methods since no mesh modification is necessary. It has a wide-spread applicability for problems with complex object motion and/or complex geometry. It is also dimension free and relatively simple to implement relative to moving mesh approaches. The discontinuous Galerkin method (DGM) is used to discretize the Euler equations associated with a compressible inviscid fluid.
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