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Numerical Study of the Effects of the Secondary Diaphragm and Contact Surface in Expansion Tubes

Numerical Study of the Effects of the Secondary Diaphragm and Contact Surface in Expansion Tubes
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摘要 The interaction of the shock reflected at a secondary diaphragm with the primary contact in six cases, i.e. the strengths and shapes of the contact surface are different, were explored by numerical study. The influences of the strength and shape of the contact on the developing wave pattern and the quality of the test gas are illustrated by many kinds of figures (e.g. the time-distance diagrams of the acoustic impedance contours on the axis, the acoustic impedance contours, and the time histories of pilot and static pressures). The interaction of the shock reflected at a secondary diaphragm with the primary contact in six cases, i.e. the strengths and shapes of the contact surface are different, were explored by numerical study. The influences of the strength and shape of the contact on the developing wave pattern and the quality of the test gas are illustrated by many kinds of figures (e.g. the time-distance diagrams of the acoustic impedance contours on the axis, the acoustic impedance contours, and the time histories of pitot and static pressures). Keywords expansion tubes - secondary diaphragm - shock propagation - contact surface
出处 《Journal of Thermal Science》 SCIE EI CAS CSCD 2004年第1期30-33,共4页 热科学学报(英文版)
关键词 EXPANSION TUBES SECONDARY DIAPHRAGM shock propagation CONTACT SURFACE expansion tubes secondary diaphragm shock propagation contact surface
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参考文献3

  • 1Roberts,G T,Kendall,M A,Morgan,R G,et al.Shock-diaphragm Interaction in Expansion Tubes.Proceedings of the 21st Int. Symposium on Shock Waves, Keppel Is[].Australia.1998
  • 2Roberts,G T,Morgan,R G,Stalker,R J.Influence of Secondary Diaphragm on Flow Quality in Shock-expansion Tubes[].Shock Waves Springer Verlag.1995
  • 3Yee,H C,Harten,A.Implicit TVD Schemes for Hyperbolic Conservation Laws in Curvilinear Coordinates[].AIAA Journal.1987

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