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Modelling and Simulation in Engineering
Volume 2012, Article ID 631276, 15 pages
http://dx.doi.org/10.1155/2012/631276
Research Article

The Role of Mesh Generation, Adaptation, and Refinement on the Computation of Flows Featuring Strong Shocks

1Dipartimento di Ingegneria e Fisica dell’Ambiente, Università della Basilicata, Viale Ateneo Lucano 10, 85100 Potenza, Italy
2Dipartimento di Ingegneria Meccanica e Aerospaziale, Università di Roma La Sapienza, Via Eudossiana 18, 00184 Rome, Italy
3Istituto per le Applicazioni del Calcolo M. Picone (IAC), Consiglio Nazionale delle Ricerche (CNR), Via dei Taurini 19, 00185 Roma, Italy

Received 7 December 2011; Accepted 19 January 2012

Academic Editor: Guan Heng Yeoh

Copyright © 2012 Aldo Bonfiglioli et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Within a continuum framework, flows featuring shock waves can be modelled by means of either shock capturing or shock fitting. Shock-capturing codes are algorithmically simple, but are plagued by a number of numerical troubles, particularly evident when shocks are strong and the grids unstructured. On the other hand, shock-fitting algorithms on structured grids allow to accurately compute solutions on coarse meshes, but tend to be algorithmically complex. We show how recent advances in computational mesh generation allow to relieve some of the difficulties encountered by shock capturing and contribute towards making shock fitting on unstructured meshes a versatile technique.