A Momentum Exchange-based Immersed Boundary-Lattice Boltzmann Method for Fluid Structure Interaction
نویسندگان
چکیده
A new immersed boundary-lattice Boltzmann method (IB-LBM) is proposed and validated in this work by its application to simulate incompressible viscous flows. The conventional IB-LBM based on the lattice Boltzmann equation with external forcing term, which contains a boundary velocity to represent the effect that the moving boundary exerts on the bounce-back distribution functions, whereas the present method use the boundary velocity to compute the momentum exchange in terms of the momentum theorem. Moreover, the momentum exchange based IB-LBM meets the Galilean invariance. Numerical examples show that the present method can provide very accurate numerical results.
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