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Investigation on Characteristics of Coupling Interaction of Supersonic Flow Induced by a Blunt Fin and a Single Jet on a Flat Plate
Received date: 2014-12-22
Online published: 2025-05-28
Characteristics of coupling interaction of supersonic flow induced by a blunt fin and a single jet on a flat plate were investigated by numerical simulation in this paper. The strong interaction and weak interaction were investigated. In this investigation, the distance between nozzle exit and a side surface of the blunt fin was selected as major parameter. In strong interaction, shock waves including both separation shock wave and bow shock wave impinged directly on the side surface of the blunt fin. The strong negative pressure gradients of shocks result in large range separation of the boundary layer. Two high pressure zones formed on the side surface of the blunt fin. In weak interaction, shock waves induced by the single jet did not impinge directly on the blunt fin, but only intersected with shock waves of the blunt fin.
Key words： supersonic; jet; blunt fin; flat plate; boundary layer separation
LIU Zhe , WANG Junqi , LIU Yaofeng , NI Zhaoyong . Investigation on Characteristics of Coupling Interaction of Supersonic Flow Induced by a Blunt Fin and a Single Jet on a Flat Plate[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2015 , 35(6) : 106 -110 . DOI: 10.15892/j.cnki.djzdxb.2015.06.027
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