Computation of non-stationary shock-wave/cylinder interaction using adaptive-grid methods

D. Drikakis, D. Ofengeim, E. Timofeev, P. Voionovich

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

A numerical study of shock wave propagation over a cylinder is presented. Hybrid, structured-unstructured adaptive grids are employed for the numerical solution of the Euler and Navier-Stokes equations. A second-order Godunov-type scheme is employed for the discretization of the inviscid fluxes, while central differences are used for the viscous terms. The time integration is obtained by a second-order prediction-corrector scheme. Simulation of the unsteady gasdynamic phenomena around the cylinder is obtained at different incident-shock Mach numbers. The shock-wave diffraction over the cylinder is investigated by means of various contour plots, as well as pressure and skin friction distributions. The calculations reveal that the Euler solutions are very close to the Navier-Stokes ones in the first half of the cylinder, but large differences between the two solutions exist in the second half of the cylinder and the wake of the flow field, where strong viscous-inviscid interaction occurs.
Original languageEnglish
Pages (from-to)665-692
Number of pages28
JournalJournal of Fluids and Structures
Volume11
Issue number6
DOIs
Publication statusPublished - 31 Aug 1997

Keywords

  • shock wave propagation
  • mathematical models
  • numerical study

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