# Benchmark Articles and Tutorials

## Comparison of the DistMesh, Gmsh, and Triangle Mesh Generators

## Comparison of the DistMesh, Gmsh, and Triangle Mesh Generators

Having implemented and fully integrated a uniform Matlab and Octave mesh generation framework with FEATool Multiphysics, it is now both very easy and convenient to directly compare mesh generation codes and algorithms with each other. In the following post the DistMesh, Gmsh, and Triangle open source mesh generators …

## CFD Solver Benchmark - OpenFOAM and FEATool

## CFD Solver Benchmark - OpenFOAM and FEATool

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

## Fortran, Julia, and Matlab FEM Benchmark Comparison

## Fortran, Julia, and Matlab FEM Benchmark Comparison

Continuing the previous solver and assembly FEM benchmark comparison this followup ensures that identical simulation problem setup is compared, in this case a 2D Poisson problem solved on a unit square. The problem is discretized with Q1 bilinear Lagrange finite elements. Finite element functions such as assembly …

## FEM Assembly and Solver Benchmarks

## FEM Assembly and Solver Benchmarks

It is both interesting and useful to compare simulation tools and the performance of different implementations. In the following we have performed three basic tests relevant to FEM simulation codes, sparse matrix vector multiplication, finite element matrix assembly, and solving the Poisson equation on a unit square, …

## Accurate Computational Fluid Dynamics CFD Simulations

## Accurate Computational Fluid Dynamics CFD Simulations

In computational fluid dynamics (CFD) simulations accuracy is often very important, especially for drag and lift values. References [2-3] 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 …