Computational And Experimental Study On Variable Area Ducts For Various Flow Conditions - A Comparative study

  • JV Muruga Lal Jeyan


Convergent divergent nozzles have always been a hot topic for aerospace sector. Its an integral part of most of the aircraft engine designs and a sensational piece of engineering. It can accelerate fluids without any moving part. It works on the principle that a subsonic flow passing through a converging duct accelerates to a sonic condition and furthermore, a diverging area duct can accelerate the same flow from sonic to supersonic condition. This paper describes the pressure variations along the length of a de-Laval nozzle through the use of seven equidistant pressure tapings. Furthermore, CFD analysis of the de-Laval nozzle has been done and pressure variations have been recorded. As for experimental study the pressure has been measured using pressure transducers. Also nozzle exit parameters such as velocity and temperature have been studied and recorded. A comparison of simulation results and experimental results shows that the measured parameters in either case are enclose proximity.