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An experimental investigation of a two-layer inviscid shock cap due to blunt-body nose injection

Published online by Cambridge University Press:  28 March 2006

Judson R. Baron  and
Edgar Alzner
Judson R. Baron
Affiliation:
Aerophysics Laboratory, Massachusetts Institute of Technology
Edgar Alzner
Affiliation:
Aerophysics Laboratory, Massachusetts Institute of Technology
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Abstract

Blunt-body solutions for suspersonic flow usually concern closed body surfaces. This paper reports on an experimental investigation of a two-layer shock cap and indicates the existence of a predictable contact surface separating the layers. The inner layer was generated by injecting air through a contoured axisymmetric channel on a blunt body so as to simulate a hemispherical contact surface in a Mach number 4.8 flow.

Results show the existence of the contact surface and the influence of a range of mass-injection rates upon the displacement of the bow shock and contact surface from the body.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 15 , Issue 3 , March 1963 , pp. 442 - 448
Copyright
© 1963 Cambridge University Press

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References

Martin, E. D. 1958 Inviscid hypersonic flow around spheres and circular cylinders. AFOSR TN 58–448.
McMahon, H. M. 1958 An experimental study of the effect of mass injection at the stagnation point of a blunt body. Calif. Inst. Tech. Guggenheim Aero. Lab. Hypersonic Res. Proj. Memo. no. 42.Google Scholar
Warren, C. H. E. 1960 An experimental investigation of the effect of ejecting a coolant gas at the nose of a bluff body. J. Fluid Mech. 8, 400.Google Scholar