CALCULATION OF THREE-DIMENSIONAL INVISCID FLOWFIELDS IN PROPULSIVE NOZZLES WITH CENTERBODIES (COMPUTATIONAL FLUID DYNAMICS, CHANNEL FLOW, EULER SOLVER, SUPER COMPUTER APPLICATIONS)
Abstract
A numerical procedure for calculating three-dimensional inviscid subsonic/transonic/supersonic flowfields in super-elliptical nozzles with centerbodies is presented. The procedure can be used to investigate advanced propulsive nozzle concepts for improved engine-airframe integration. The interior point unit process is based on MacCormack's explicit predictor-corrector method and the boundary point unit processes are based on a variation of the method of characteristics due to Kentzer. The overall numerical algorithm is an explicit second-order accurate procedure. Steady flow solutions are obtained as the asymptotic solution in time. Results are presented for several two-dimensional and three-dimensional inviscid flowfields. Solutions obtained by the present method agree well with solutions obtained by method of characteristics algorithms and experimental data.
Degree
Ph.D.
Subject Area
Mechanical engineering
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