Shock-conforming mesh generation for aerodynamic analyses at supersonic regimes

Javier Herrera Montojo, Marco Fossati, Edmondo Minisci

Research output: Contribution to journalArticle

Abstract

A shock estimation approach is proposed in the context of the generation of shock-conforming meshes for the numerical analysis of inviscid, steady, supersonic and hypersonic flows. For given flow conditions and vehicle’s geometry, the method provides a fast estimation of the shock waves pattern such that grid points can be clustered along the shock waves in a judicious manner. In this way, the uncertainty on mesh generation for shock-dominated flows is reduced and the use of adaptive mesh refinement could be made more efficient or, in some cases, even considered not necessary. The approach is verified against two and three-dimensional supersonic flows for conceptual exemplary geometries like wedges and revolution bodies and more real-world vehicles configurations like rockets and hypersonic aircraft. Qualitative and quantitative assessment of the solution-mesh pair quality is proposed to evaluate the quality of the resulting shock-conforming meshes.
LanguageEnglish
Pages276-293
Number of pages18
JournalComputers and Fluids
Volume157
Early online date1 Sep 2017
DOIs
Publication statusPublished - 3 Nov 2017

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Mesh generation
Supersonic flow
Shock waves
Aerodynamics
Hypersonic vehicles
Hypersonic flow
Geometry
Steady flow
Rockets
Numerical analysis
Uncertainty

Keywords

  • supersonic aerodynamics
  • shock estimation
  • mesh generation

Cite this

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abstract = "A shock estimation approach is proposed in the context of the generation of shock-conforming meshes for the numerical analysis of inviscid, steady, supersonic and hypersonic flows. For given flow conditions and vehicle’s geometry, the method provides a fast estimation of the shock waves pattern such that grid points can be clustered along the shock waves in a judicious manner. In this way, the uncertainty on mesh generation for shock-dominated flows is reduced and the use of adaptive mesh refinement could be made more efficient or, in some cases, even considered not necessary. The approach is verified against two and three-dimensional supersonic flows for conceptual exemplary geometries like wedges and revolution bodies and more real-world vehicles configurations like rockets and hypersonic aircraft. Qualitative and quantitative assessment of the solution-mesh pair quality is proposed to evaluate the quality of the resulting shock-conforming meshes.",
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Shock-conforming mesh generation for aerodynamic analyses at supersonic regimes. / Herrera Montojo, Javier; Fossati, Marco; Minisci, Edmondo.

In: Computers and Fluids, Vol. 157, 03.11.2017, p. 276-293.

Research output: Contribution to journalArticle

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