Explicit time integration of the Navier-Stokes equations using the local iteration method

Abstract:

New time integration algorithm LI-M is proposed for the Navier-Stokes equations of compressible heat-conducting flows. This algorithm is based on the splitting procedure by convection and diffusion processes over a time step. The explicit scheme computes solution of convection part and the explicit-iteration Chebyshev scheme computes the diffusion part. The resulting scheme makes it possible to avoid diffusion restriction on time step. The scheme has a predictor-corrector structure and ensures the fulfillment of conservation laws. The explicit nature of the calculations ensures the efficiency of the use of the scheme in various parallel technologies.

Keywords:

Navier-Stokes equations, splitting by physical processes, Chebyshev explicit-iteration scheme

Publication language:russian,
pages:32

Research direction:

Mathematical problems and theory of numerical methods