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A Solution Adaptive Multi-grid Euler Solver on Two-dimensional Cartesian Grids
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kara, Emre Can Aksel, M. H. |
| Copyright Year | 2015 |
| Abstract | Cartesian grid method for inviscid flows was a very popular and powerful tool in late 80’s for its robustness, quick solution convergence and automatic grid adaption around complex geometries. In last decade, by the help of ingenious approaches and fast computers, the method is born out of its ashes. In this paper, it is aimed to generate locally refined hierarchical Cartesian grids for twodimensional irregular geometries to provide solutions, which are easy to realize and accurate in the case of inviscid compressible flows around such geometries. Automatic Cartesian grid generation methodology is implemented in object-oriented FORTRAN programming language. Dynamic quadtree data structure algorithm is used to store the parent/child and cell/neighbor connectivities. The grid typically begins with a single root cell, and grows by a recursive subdivision of each cell into its four children which is done in coarsening part of the FORTRAN 90 subroutines. The goals are to enhance automatic grid generation, to increase convergence rate with multi-grid method and to facilitate solution adaptation with least squares reconstruction scheme on inviscid flows. As a benchmark test case, supersonic flow around a Ni-bump construction gave the opportunity to test the shock wave capturing capability of GeULER for a solid body bordered by two solid walls. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://aiac.ae.metu.edu.tr/paper.php?Paper=AIAC-2015-133 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |