Smooth Interfaces for Spectral Element Approximations of Navier-Stokes Equations

摘要

A smoothing technique is developed to calculate the interface conditions of spectral element method for solving the incompressible Navier-Stokes equations. The first derivative of spectral element solution at the interface is calculated by using only the adjacent element information. Numerical simulations of an incompressible laminar fluid flow through a 2 : 1 planar contraction channel are presented for various Reynolds numbers.