# Cfd Articles and Tutorials

## Modeling and Simulation of Axisymmetric Swirling Flows

Fluid Flow Simulations with Swirl Effects Fluid flows with swirl effects can occur in rotationally symmetric geometries where the azimuthal or angular velocity component is non-zero. In this case one must solve the fully three-dimensional Navier-Stokes equations. However, due to the assumption that azimuthal variations …

## CFD Solver Benchmark - FeatFlow and FEATool

To evaluate the efficiency of the FeatFlow CFD solver one can use the now classic DFG flow over a cylinder CFD benchmark [1][2] for which very accurate reference solutions for drag, lift, and pressure difference have been established [3][4]. The model problem is set up and solved with identical grids and finite element …

## FeatFlow - Fast External CFD Solver Integration with FEATool

Continually making physics simulation easier, better, and more approachable, this post introduces FeatFlow, a very fast and efficient finite element FEM based computational fluid dynamics (CFD) solver for the incompressible Navier-Stokes equations. The FeatFlow solver interface is now available in FEATool Multiphysics, …

## Accurate Computational Fluid Dynamics CFD Simulations

In computational fluid dynamics (CFD) simulations accuracy is often very important, especially for drag and lift values. References [1-3] describe a CFD benchmark problem for time-dependent flow around a cylinder where the Reynolds number varies between 0<=Re<=100. The references contain very accurate reference …