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Shock Waves pp 1175-1180 | Cite as

Starting nozzle flow simulation using K-G two-equation turbulence model

  • G. W. Yang
  • Z. M. Hu
  • Z. Jiang
Conference paper

Abstract

The starting process of two-dimensional nozzle flows has been simulated with Euler, laminar and k − g two-equation turbulence Navier-Stokes equations. The flow solver is based on a combination of LUSGS subiteration implicit method and five spatial discretized schemes, which are Roe, HLLE, MHLLE upwind schemes and AUSM+, AUSMPW schemes. In the paper, special attention is for the flow differences of the nozzle starting process obtained from different governing equations and different schemes. Two nozzle flows, previously investigated experimentally and numerically by other researchers, are chosen as our examples. The calculated results indicate the carbuncle phenomenon and unphysical oscillations appear more or less near a wall or behind strong shock wave except using HLLE scheme, and these unphysical phenomena be- come more seriously with the increase of Mach number. Comparing the turbulence calculation, inviscid solution cannot simulate the wall flow separation and the laminar solution shows some different flow characteristics in the regions of flow separation and near wall.

Keywords

Shock Wave Mach Number Contact Discontinuity Nozzle Flow High Mach Number 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • G. W. Yang
    • 1
  • Z. M. Hu
    • 1
  • Z. Jiang
    • 1
  1. 1.LHD Institute of MechanicsChinese Academy of SciencesBeijingChina

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