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An electronic analogue for supersonic flow

Published online by Cambridge University Press:  28 March 2006

Leslie S. G. Kovásznay
Affiliation:
Department of Aeronautics, The Johns Hopkins University, Baltimore

Abstract

An analogue method for solving certain quasi-linear hyperbolic partial differential equations is presented. The characteristic lines are formed by scanning electronically the screen of a cathoderay tube. The boundary conditions are introduced in the form of an opaque mask. The solution appears as a picture on the screen of a second cathode-ray tube. The experiments demonstrate the feasibility of the approach, but the development of the machine has not been carried beyond this stage.

Type
Research Article
Copyright
© 1957 Cambridge University Press

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References

Courant, R. & Friedrichs, K. O. 1948 Supersonic Flow and Shock Waves. New York: Interscience.
Higgins, T. J. 1956 Electroanalogic Methods. Applied Mech. Rev. 9, 1.Google Scholar
Howarth, L. (Ed.) 1953 Modern Developments in Fluid Dynamics: High Speed Flow. Vol. I, p. 64. Oxford University Press.
Kovasznay, L. S. G. & Joseph, H. M. 1955 Image processing. Proc. Inst. Radio Engrs. 43, 560.Google Scholar
Lighthill, M. J. 1954 Higher Approximations, Section E of General Theory of High Speed Aerodynamics (Ed. W. Sears). Princeton University Press.