Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, EpiSciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Journal articles

Direct numerical study of hypersonic flow about a swept parabolic body

Abstract : Direct numerical simulations (DNS) of hypersonic flow about a swept parabolic body have been performed to study the global stability of flow in the leading-edge region of a swept blunt body. Previous stability investigations have been based on local models but have not fully succeeded in reproducing the established experimental findings. The current flow configuration represents a more realistic model and is thus expected to resolve some of the remaining questions. However, novel approaches like DNS-based global stability theory are necessary for such flow models and are employed in this study. As a result, boundary-layer modes have been identified by different but complementary techniques as the dominant instability mechanism. The DNS starting with small-amplitude white noise provide further evidence for the presence of non-modal effects which may be important in the subcritical regime. From a methodological point of view, the potential for quantitative flow analysis by combining numerical simulations with advanced iterative techniques represents a promising direction for investigating the governing physical processes of complex flows. © 2010 Elsevier Ltd.
Complete list of metadata

https://hal-polytechnique.archives-ouvertes.fr/hal-01020630
Contributor : Denis Roura Connect in order to contact the contributor
Submitted on : Tuesday, July 8, 2014 - 12:33:26 PM
Last modification on : Thursday, March 5, 2020 - 6:29:19 PM

Identifiers

Collections

Citation

Christophe J. Mack, P.J. Schmid. Direct numerical study of hypersonic flow about a swept parabolic body. Computers and Fluids, Elsevier, 2010, 39 (10), pp.1932-1943. ⟨10.1016/j.compfluid.2010.06.025⟩. ⟨hal-01020630⟩

Share

Metrics

Record views

126