Grid Generation with Directional Scaling
For models and geometries where either one axis direction dominates, such as for long or tall geometry objects, or simulations where the solution is expected to not to vary in certain directions, such as some flow situations, it can be very beneficial to use anisotropic grids. By using elongated mesh elements the total …
Comparison of the DistMesh, Gmsh, and Triangle Mesh Generators
Having implemented and fully integrated a uniform MATLAB 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 are compared …
FEA Mesh generation in MATLAB with Gmsh
Gmsh Mesh Generator Gmsh is a very capable and cross platform stand-alone open source mesh generator for FEA and CFD applications. In addition to many built-in mesh generation algorithms, it also includes support for a variety of integrated mesh generators, such as Tetgen and Netgen, and also popular 2D and 3D CAD file …
Creating 3D Semi-Structured Grids Using Extrusion
When generating grids and meshes for fully three-dimensional structures with constant cross section in one or more directions, it is often advantageous to first create a two dimensional grid and extrude it to 3D, rather than generate a full 3D grid directly. By using the extrusion technique more control over the grid …
CAD File Import, Mesh, and Grid Generation with Gmsh
Gmsh is a popular cross platform and open source mesh generation software which supports many CAD file formats such as STEP, IGES, and STL. In addition to its own mesh generation algorithms, Gmsh also includes support for a variety of integrated mesh generators, such as Netgen, Tetgen, and Triangle. As such is it one …
Triangle Mesh Generator GUI and CLI Integration with FEATool
FEATool-Triangle Mesh Generator Integration The fast and efficient 2D mesh and grid generator, Triangle, by J.R. Shewchuk’s is fully integrated with FEATool Multiphysics [1][2][3]. Both MATLAB command line interface (CLI) usage is supported with the gridgen function, as well as FEATool GUI usage by selecting the …
Interactive 3D Data and Simulation Visualizations with Plotly and MATLAB
FEATool can be used to easily generate interactive surface, contour, arrow, and other visualizations of unstructured mesh and simulation data in 1D, 2D, and 3D. As FEATool also supports Plotly as rendering and visualization engine it is possible to create, interactively explore, and share simulation and unstructured …
Visualization and Postprocessing on Unstructured Grids and Meshes with FEATool Functions
This post explains how to use MATLAB and the FEATool postprocessing function library to import, plot, and visualize general data on unstructured grids and meshes. Although MATLAB do include visualization functionality for surface and contour plots (with the surf and contour functions), it is currently limited to …
Automatic Unstructured Quadrilateral Grid Generation
QuadMesh is a MATLAB cross compatible automatic and unstructured quadrilateral grid generation code, developed to be used with the FEATool Multiphysics MATLAB Finite Element simulation toolbox. Using quadrilateral grid cells are often advantageous to simplex or triangular cells in that they can provide somewhat more …
Calling the External Grid Generator Triangle from FEATool
Please Note that the gridgen_triangle function has been fully integrated with the both the FEATool GUI and CLI, and embedded in the gridgen function. See the FEATool-Triangle Mesh Generator Integration post for more details. FEATool Multiphysics supports calling external programs for grid generation, solvers, and …