Theoretical investigation of shock stand-off distance for non-equilibrium flows over spheres

Hua SHEN, Chih-yung Wen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)

Abstract

We derived a theoretical solution of the shock stand-off distance for a non-equilibrium flow over spheres based on Wen and Hornung's solution and Olivier's solution. Compared with previous approaches, the main advantage of the present approach is allowing an analytic solution without involving any semi-empirical parameter for the whole non-equilibrium flow regimes. The effects of some important physical quantities therefore can be fully revealed via the analytic solution. By combining the current solution with Ideal Dissociating Gas (IDG) model, we investigate the effects of free stream kinetic energy and free stream dissociation level (which can be very different between different facilities) on the shock stand-off distance.

Original languageEnglish
Pages (from-to)990-996
Number of pages7
JournalChinese Journal of Aeronautics
Volume31
Issue number5
DOIs
Publication statusPublished - 1 May 2018

Keywords

  • Blunt body shock
  • Gas dynamics
  • Non-equilibrium flow
  • Shock stand-off distance
  • Supersonic/hypersonic flow

ASJC Scopus subject areas

  • Aerospace Engineering
  • Mechanical Engineering

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