Kinetically reduced local Navier-Stokes equations: an alternative approach to hydrodynamics

Phys Rev E Stat Nonlin Soft Matter Phys. 2006 Sep;74(3 Pt 2):035702. doi: 10.1103/PhysRevE.74.035702. Epub 2006 Sep 29.

Abstract

An alternative approach, the kinetically reduced local Navier-Stokes (KRLNS) equations for the grand potential and the momentum, is proposed for the simulation of low Mach number flows. The Taylor-Green vortex flow is considered in the KRLNS framework, and compared to the results of the direct numerical simulation of the incompressible Navier-Stokes equations. The excellent agreement between the KRLNS equations and the incompressible nonlocal Navier-Stokes equations for this nontrivial time-dependent flow indicates that the former is a viable alternative for computational fluid dynamics at low Mach numbers.