CFD simulation of flow fields associated with high speed jet impingement on deflectors
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Three different turbulent free jets produced by a simple convergent nozzle were analyzed. These include a subsonic jet with p1/pâ =1 and M1=0.57, a moderately under-expanded jet with p1/pâ =1.42 and M1=1, and a highly under-expanded jet with p1/pâ =3.57 and M1=1. The reflecting shocks associated with the moderately under-expanded jet as well as the shock disk associated with the highly under-expanded jet were fully resolved. Velocity profile data predicted at locations downstream of the nozzle exit agreed very well with the experimental results.
The impingement of a moderately under-expanded jet with p1/pâ =1.42 and M1=1 was also investigated. The interaction of the high speed jet with circular flat plates at angles of 60Â° and 45Â° relative to the center axis of the jet are presented. Wall jet velocity profiles on the surface of the flat plate are fully resolved and compare well with experimental results. The CFD solver controls and method used to obtain these results are summarized and justified.
- Masters Theses