Adaptive finite element computations of hypersonic inviscid flows around a doubel ellipsoid
This report documents the potential capabilities of adaptive inviscid flow calculations on unstructured meshes in three dimensions using the finite element method. The finite element formulation of the compressible Euler and Navier-Stokes equations is based on a two-step explicit Taylor-Galerkin sch...
| Autores: | , |
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| Tipo de recurso: | informe técnico |
| Fecha de publicación: | 1995 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/183696 |
| Acceso en línea: | https://hdl.handle.net/2117/183696 |
| Access Level: | acceso abierto |
| Palabra clave: | Numerical analysis--Simulation methods Fluid mechanics Research Report CIMNE Anàlisi numèrica Mecànica de fluids Classificació AMS::65 Numerical analysis::65D Numerical approximation and computational geometry Classificació AMS::76 Fluid mechanics::76G25 General aerodynamics and subsonic flows Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències |
| Sumario: | This report documents the potential capabilities of adaptive inviscid flow calculations on unstructured meshes in three dimensions using the finite element method. The finite element formulation of the compressible Euler and Navier-Stokes equations is based on a two-step explicit Taylor-Galerkin scheme. Adaptive remeshing is applied to enhance the numerical solution in the vicinity the shocks. Particular emphasis is put on the generation of unstructured tetrahedral meshes as well as in the discussion of estimating the error in the numerical solution. Finally, an application to a well-known 3D high speed flow problem is shown where adaptive remeshing techniques become essential to keep the computational cost within reasonable limits. Its results are compared to some seemingly best reference solutions using other algorithms. |
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