An immersed-boundary finite-volume method for simulations of flow in complex geometries

摘要: Abstract A new immersed-boundary method for simulating flows over or inside complex geometries is developed by introducing a mass source/sink as well momentum forcing. The present based on finite-volume approach staggered mesh together with fractional-step method. Both forcing and source are applied the body surface to satisfy no-slip boundary condition immersed also continuity cell containing boundary. In method, choice of an accurate interpolation scheme satisfying important because grid lines generally do not coincide Therefore, stable second-order evaluating proposed. Three different flow problems (decaying vortices cylinder sphere) simulated using proposed in this study results agree very previous numerical experimental results, verifying accuracy