Questions tagged [mesh-generation]
The generation of a set of interconnected geometric objects that approximate a desired domain or region in euclidean space.
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mesh generation software before the 1990s
Bit of a soft / history question which might be answerable best by people who are retired or residents of another spiritual plane.
The first open-source mesh generators that were good enough for ...
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Why does Gmsh require oriented lines for closed loop?
Why does Gmsh require that the lines that form a closed loop be provided in an oriented fashion?
Why can it not detect automatically perhaps like it detects volume even though there does not seem to ...
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Remeshing open source software for hexahedral elements?
I am looking for open source software recommendations for remeshing distorted hexehedral triangulations, arising e.g from large deformation hyperelasticity boundary value problems.
Easy interfacting ...
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constrained Delaunay triangulation algorithm starting, not ending, with constraints
Let $X$ be a collection of points in $\mathbb{R}^2$, and let $\Omega$ be a triangulation of the input point set.
A triangle $\{x_i, x_j, x_k\}$ encroaches on the point $x_l$ if $x_l$ is in the ...
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(Isoparametric) Mapping of physical coordinates to their equivalent parametric coordinates on a reference element
I have some experiece with finite element methods (FEM), in general. However, I mainly worked with Cartesian grids -- i.e. using orthogonal (non-curved) elements.
Recently, I became interested in a ...
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Finding neighboring cells using Gmsh API
I am creating a simple mesh on a square domain, $[-5,5]\times[-5,5]$ using the following .geo file
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Best way to find the meshing with lowest number of elements allowing a max error of 1%?
So, I have a reference simulation meshing that's 100% reliable but it's costly in terms of time so I'm looking for optimizing it by finding the minimum mesh allowing at most 1% of error with respect ...
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Generating unstructured finite volume mesh
I want to generate a triangular mesh over a rectangle domain in order to solve Euler equations. Most mesh generator generate a mesh while providing node connectivity for each element. This is ...
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How to generate mesh for space-time FEM method in FEniCS?
suppose that I have a region called $\Omega $,suppose that this is a 2D or 3D region, how to generate the corresponding space-time mesh by using FEniCS? and how to extract the boundary and implement ...
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Gmsh problems in Google Colab, visualize mesh
I'm trying to implement mesh in Google colab from gmesh tutorials.
I have an error: Exception: Fltk not available
My code is:
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Algebraic Grid Generation
I am new to the topic " Algebraic Grid Generation". I want to find a simple example where we solve the host equation, let us say the heat equation, numerically in the computational domain ...
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AMR-Capable meshing software that is not based on quad/octrees
I am looking for AMR/re-meshing software (structured grids would suffice) that is NOT based on quad-octrees, i.e., a fixed refinement rate of 2 but (ideally) something user defined, i.e., ratios of 1....
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Wall refinement of a tetraheadral Complex Geometry using Gmsh without a Geo file
I have an msh file, which is generated from a third party software(Pointwise). The geometry is a complex cylindrical pipe like structure with lot of branches. I need to refine the mesh further only on ...
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Could you recommend some books on FEM that explain various data-structures in FEM?
I want to understand the data structure of elements, elements around elements, and so on, and various other data structures in FEM, could you please recommend some books?
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Delaunay-based isosurface extraction vs marching cubes
I recently tried the isosurface extraction algorithm provided by the C++ library CGAL. This is new to me. It is based on Delaunay triangulations.
I have some experience with the marching cubes, I ...
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