BLOWING FROM A POROUS CONE OR WEDGE WHEN THE CONTACT SURFACE IS STRAIGHT.
Rept. for 15 Apr-7 Jun 66,
AEROSPACE CORP EL SEGUNDO CA LAB OPERATIONS
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An analysis of inviscid, compressible flow over a porous conne or wedge is given where the body is immersed in a supersonic free stream at zero angle of attack. Massive blowing occurs at the surface, where the injected gas need not be the same as the free-stream gas. The major hypothesis of this work is that both the contact surface and shock wave are straight and attached to the body at its tip. Thus, the flow between the shock and contact surface is uniform for the wedge or Taylor-Maccoll flow for the cone. Conditions at the surface allow for a power-law variation in the blowing, arbitrary Mach number, and arbitrary angle of injection. With normal blowing, solutions exist only for the cone. Many aspects of the injected-gas flow field are discussed, including the contact surface angle, pressure variation, and rotationality. An interesting conclusion is that the pressure Mach number, and flow inclination angle do not depend on the power-law exponent, but are given by the irrotational, uniform blowing solution. In addition, a wide variety of solutions, obtained numerically, are presented and discussed. Author
- Fluid Mechanics