The numerical simulation of interaction between fluid and complex geometries, e.g., multibody store separation, is computational expensive and parallelism often appears as the only way towards large scale of simulations even if we have a fast Navier-Stokes solver. The method we advocate here is the combination of a distributed Lagrange multiplier based fictitious domain method and operator splitting schemes.
This method allows the use of a fixed structured finite element grid on a simple shape auxiliary domain containing the actual one for the entire fluid flow simulation, so it can be easily parallelized and there is no need to generate a new mesh at each time step right after finding the new position of the rigid bodies. Numerical results of multibody store separation in an incompressible viscous fluid on a SGI Origin 2000 are presented.
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Last updated October 16, 2000