An Immersed Interface Method for the Incompressible Navier-Stokes Equations in Irregular Domains
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HPCES003.pdf
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Author(s)
Le, Duc-Vinh
Khoo, Boo Cheong
Peraire, Jaime
Date Issued
January 2005
Series/Report no.
High Performance Computation for Engineered Systems (HPCES);
Abstract
We present an immersed interface method for the incompressible Navier Stokes equations capable of handling rigid immersed boundaries. The immersed boundary is represented by a set of Lagrangian control points. In order to guarantee that the no-slip condition on the boundary is satisfied, singular forces are applied on the fluid at the immersed boundary. The forces are related to the jumps in pressure and the jumps in the derivatives of both pressure and velocity, and are interpolated using cubic splines. The strength of singular forces is determined by solving a small system of equations at each time step. The Navier-Stokes equations are discretized on a staggered Cartesian grid by a second order accurate projection method for pressure and velocity.
Subjects
Immersed interface method
Navier-Stokes equations
Cartesian grid method
finite difference
fast Poisson solvers
irregular domains
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