Minimum divergence viscous flow simulation through finite difference and regularization techniques

Simulation of time-dependent compressible viscous flows using central and upwind-biased finite-difference techniques

Efficient Simulation of Viscous Flow by Means of Turbulence Regularization Modeling and Local Grid Refinement

In this paper, a number of methods are described that allow for more accurate and more efficient computation of viscous flow effects with the CFD tool COMFLOW. The intended application area is the offshore environment, where flows are characterized by Reynolds numbers of at least O(106). A symmetry-preserving regularization model will be used to model turbulence. In the near-wall region, an ext...

Comparison of Explicit Finite Difference Model and Galerkin Finite Element Model for Simulation of Groundwater Flow

Abstract— This paper describes Galerkin finite element (FEFLOW) models for the simulation of groundwater flow in twodimensional, transient, unconfined groundwater flow systems. This study involves validation of FEFLOW model with reported analytical solutions and also comparison of reported Explicit Finite Difference Model for groundwater flow simulation (FDFLOW). The model is further used to ob...

Divergence-free Wavelet Projection Method for Incompressible Viscous Flow

We present a new wavelet numerical scheme for the discretization of Navier-Stokes equations with physical boundary conditions. The temporal discretization of the method is inspired from the projection method. Helmholtz-Hodge decomposition using divergence-free and curl-free wavelet bases satisfying physical boundary conditions allows to define the projection operator. This avoids the use of Poi...

Hybrid Mesh Generation for Viscous Flow Simulation

This paper presents a robust and automated approach to generate unstructured hybrid grids comprised of prismatic and tetrahedral elements for viscous flow computations. The hybrid mesh generation starts from a triangulated surface mesh. The prismatic elements are extruded based on the weak solutions of the Eikonal equation to generate anisotropic elements at boundaries, and finally the isotropi...