Comparing vortex methods and finite difference methods in a homogeneous turbulent shear flow
The vortex method is applied to the calculation of a homogeneous shear turbulence, and compared with a finite difference code using identical calculation conditions. The core spreading method with spatial adaptation is selected as the viscous diffusion scheme of the vortex method. The shear rate is chosen so that it matches the maximum value observed in a fully developed channel flow. The isosurface, anisotropy tensors, and joint probability density functions reflect the ability of the present vortex method to quantitatively reproduce the anisotropic nature of strongly sheared turbulence, both instantaneously and statistically. Copyright (C) 2009 John Wiley & Sons, Ltd.
vortex methods finite difference methods core spreading methods meshfree methods homogeneous shear flow fast multipole methods