Details

Autor(en) / Beteiligte

• Herrera-Montojo, J.
• Fossati, M.
• Minisci, E.

Titel

Shock-conforming mesh generation for aerodynamic analyses at supersonic regimes

Ist Teil von

• Computers & fluids, 2017-11, Vol.157, p.276-293

Ort / Verlag

Amsterdam: Elsevier Ltd

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •An optimized method to estimate shock waves in inviscid steady flows is proposed.•Oblique, attached, curved, detached shocks are addressed in a unified accurate manner.•The method enables the generation of shock-conforming meshes for complex vehicles.•The approach allows reducing heuristics on mesh generation for aerodynamic studies.•Paired with mesh adaptation, the method promotes grid independent CFD results. 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.