A hybrid multigrid method for the unsteady incompressible Navier–Stokes equations

摘要

An approach is presented for the high Reynolds incompressible flow, based on multigrid method and sequential regular method. In this paper, the velocity–pressure increment and sequential regular equations are derived from the Navier–Stokes equation. The pressure increment optimum sweep algorithm is discussed. The numerical results of the close square flow show that our algorithm improves the convergence rate for high Reynolds unsteady flow.