An Immersed Boundary-Lattice Boltzmann Method for the Simulation of the Flow Past an Impulsively Started Cylinder


Dupuis A., Chatelain P., Koumoutsakos P., Journal of Computational Physics, 227(9), 4486-4498, 2008



We present a lattice-Boltzmann method coupled with an immersed boundary technique for the simulation of bluff body lows. The lattice-Boltzmann method for the modeling of the Navier–Stokes equations, is enhanced by a forcing term to ccount for the no-slip boundary condition on a non-grid conforming boundary. We investigate two alternatives of coupling he boundary forcing term with the grid nodes, namely the direct and the interpolated forcing techniques. The present B–IB methods are validated in simulations of the incompressible flow past an impulsively started cylinder at low and oderate Reynolds numbers. We present diagnostics such as the near wall vorticity field and the drag coefficient and comparisons ith previous computational and experimental works and assess the advantages and drawbacks of the two techniques. 2008 Elsevier Inc. All rights reserved.