Shock structure in non-circular jetsThe shock-cell structure of supersonic jets with non-circular exit geometry is modeled using a linearized analysis. The model takes into account the finite thickness of the jet shear layer using realistic velocity and density profiles. The effects of the shear layer turbulence are included by incorporating eddy-viscosity terms. A finite-difference numerical method is used to solve the steady linearized equations of motion. A body-fitted coordinate system is used to describe the shear layer. The variation of the pressure fluctuation with downstream distance is given for circular jets and for an elliptic jet of aspect ratio 2.0. Comparisons with experimental data are made. Difficulties with the numerical technique are also discussed.
Document ID
19890050282
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Morris, Philip J. (Pennsylvania State Univ. University Park, PA, United States)
Bhat, Thonse R. S. (Pennsylvania State University University Park, United States)