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An electronic analogue for supersonic flow

Published online by Cambridge University Press:  28 March 2006

Leslie S. G. Kovásznay
Leslie S. G. Kovásznay
Affiliation:
Department of Aeronautics, The Johns Hopkins University, Baltimore
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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
Information
Journal of Fluid Mechanics , Volume 2 , Issue 4 , June 1957 , pp. 383 - 396
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.