The generation of a set of interconnected geometric objects that approximate a desired domain or region in euclidean space.
2
votes
1answer
39 views
Minimal surface solution in Python
Note: this question was also posted in StackOverflow and math.stackexchange.
I have a set of 3D points defining a 3D contour, as shown below. The points in this contour lie in their best-fit plane ...
5
votes
2answers
89 views
How many cells/elements do I need?
I'm relatively new in the CFD modelling and I'm making a VOFmodel of a rectangular box (lxwxh 120x80x8m) with an inlet (wxh 10x8) at the long side. The pressure outlet is the upper-face of the box ...
1
vote
0answers
61 views
features recognition & reconstruction of 3d mesh delaunay matlab
I managed to display the coordinates of x,y and z into a 3D mesh by using delaunay function. The coordinates are in .obj format actually and i have read it into matrix form.
Now, i would like to ...
5
votes
2answers
148 views
Mesh simple 2d CAD boundry drawing
I sincerely apologise if this question is a duplicate. Though it is clearly a question that must have been asked and answered a 1000 times I can't find any reasonable solution.
How do I take a simple ...
2
votes
1answer
58 views
Single nodes after mpmetis partitioning
I was checking partitioning capabilities of Metis (mpmetis) when I noticed, that it leaves two single nodes. I have marked them in red http://i.imgur.com/Eltz4.png
Have you seen something similar or ...
7
votes
2answers
134 views
Octree cubes to tetrahedrons
I'm trying to learn more about volume meshing and have decided to try to implement a simple volume mesher. The strategy I have chosen is to subdivide my space using an octree, refined based on some ...
5
votes
1answer
1k views
How to set up the dynamic mesh for a piston moving through a tube of variable diameter?
The tutorial case incompressible/pimpleDyMFoam/movingCone describes a cone moving through a "tube" (if you change the far-field patch into a wall) of constant ...
2
votes
2answers
191 views
Mesh domain decompositions / mesh partitioning
I have some experience with mpmetis from METIS. It is pretty good software which offers unstructured mesh grid partitioning. But obtained results always minimize edgecuts or total communication ...
5
votes
2answers
344 views
Is there any 2D shape repository?
As far as I see, there are many repositories for 3D shapes. But in FEM and many other applications, a planar mesh domain is also very common. However, I did not find a mesh repository specially ...
2
votes
2answers
177 views
Algorithm to compute the intersection of meshlines with a boundary
I need a program or an algorithm that computes the intersection of a mesh and a boundary.
The mesh is structured orthogonal in nature and the boundary is a circle (for example). This will be used ...
3
votes
1answer
141 views
What efficient algorithms are there to generate arbitrary dimensional meshes of simplices?
I know that delaunay triangulation can be extended into arbitrary dimensions by solving the convex hull problem in $(p+1)$ dimensions and projecting the lower hull into dimension $p$ to obtain a mesh ...
6
votes
3answers
279 views
Surface Mesh Library
I'm thinking a bit about the Front Tracking method used for simulation of Two phase flow with sharp interfaces. The literature tells me that the main issue is the surface mesh representation ...
12
votes
2answers
1k views
Unstructured quad mesh-generation?
What is the best (scalability and efficiency) algorithms for generating unstructured quad meshes in 2D?
Where can I find a good unstructured quad mesh-generator? (open-source preferred)
3
votes
2answers
260 views
Looking for a library or algorithms to perfom clipping 3D unstructured meshes by a set of surfaces
We have a 3D (volume) unstructured, possibly hybrid, degenerative irregular mesh data structure that we are capable of generating (mostly composed of hexahedra and general polyhedra, using a mix of ...
7
votes
3answers
437 views
finite volume method: unstructured mesh vs octree adaptation + cell cutting
I'm working with the OpenFOAM C++ Computational Continuum Mechanics library (it can deal with fluid-solid interaction, MHD flows...) which uses arbitrary unstructured meshes. This was driven by the ...
