# Elliptic meshing generation

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 November 3, 2001, 04:40 Elliptic meshing generation #1 Meggie Guest   Posts: n/a Sponsored Links please recommend some simple code. I am entry-learner.

 November 6, 2001, 00:27 Re: Elliptic meshing generation #2 Axel Rohde Guest   Posts: n/a I wrote an elliptic mesh generator many years ago, based on four different numerical methods. Unfortunately, I no longer have the report, otherwise I would send it to you (the source code would not help you; I don't even understand it anymore). Elliptic grid generators are based on Laplace's or Poisson's equation (P = L + source term). In essence, you are solving a (2-D) heat conduction problem, and your converged mesh consists of lines of constant temperature (isotherms) intersected normally by flux lines. There are several ways to solve the Laplace or Poisson equation numerically. In increasing complexity, these are, SG-SOR SG-ADI MG-SOR MG-ADI where, SG = Single-Grid MG = Multi-Grid SOR = Successive Over-Relaxation ADI = Alternating Direction Implicit You should be able to find references to these methods in the literature. A good starting point for elliptic mesh generation is Chapter 5, "Computational Fluid Dynamics - The Basics with Applications", by John D. Anderson, Jr.

 November 7, 2001, 03:08 Re: Elliptic meshing generation #3 S.P.Asok Guest   Posts: n/a Mr.Axel,is it that the generated mesh can be used for all kind of discretisations.I am a finite element follower.Regards,asoksp

 November 8, 2001, 08:48 Re: Elliptic meshing generation #4 Axel Rohde Guest   Posts: n/a Certainly! The elliptically generated mesh has quadrilateral cells. Most FE analysts prefer triangular cells, which can be obtained by simply cutting the quadrilaterals at opposing corner points.

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