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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN 印刷: 2152-5102
ISSN オンライン: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v43.i5-6.90
pages 489-502

Simulation of High-Speed Transonic and Supersonic Flows with Anisotropic Mesh Refinement and Coarsening Strategies

Renato V. Linn
Graduate Program in Civil Engineering (PPGEC), Federal University of Rio Grande do Sul (UFRGS) 99 Osvaldo Aranha Ave. 3rd floor, 90035-190, Porto Alegre, RS, Brazil
Armando M. Awruch
Graduate Program in Civil Engineering (PPGEC), Federal University of Rio Grande do Sul (UFRGS) 99 Osvaldo Aranha Ave. 3rd floor, 90035-190, Porto Alegre, RS, Brazil

要約

The simulation of high-speed steady-state compressible flows at transonic and supersonic speed ranges is presented in this work, combining the Characteristic-Based Split scheme (CBS), the Finite Element Method (FEM) and anisotropic unstructured mesh adaptation. The adaptation procedure makes use of the h-adaptation strategy for mesh refinement and coarsening. The refinement step consists of a Riemannian centred split of edges, followed by the partitioning of the elements, covering all anisotropic subdivision possibilities. Coarsening is evaluated through an edge collapse procedure with anisotropic considerations. As a result, anisotropic meshes are obtained using the present strategy without making use of mesh movement (smoothing procedures). The aerodynamic analysis of complex geometries are then evaluated with the present approach and compared with experimental and numerical investigations.


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