Accession Number:

AD0270610

Title:

AN INVESTIGATION OF THE FLOW DUE TO SHOCK IMPINGEMENT ON A CONSTRICTION

Descriptive Note:

Corporate Author:

RENSSELAER POLYTECHNIC INST TROY N Y

Personal Author(s):

Report Date:

1961-08-01

Pagination or Media Count:

1.0

Abstract:

Equations for the asymptotic flow due to passage of a shock through a constriction are presented. The region of ambiguity which involved 3 possible solutions with either a reflected shock, a standing shock, or no shock, is reviewed. A wave diagram is constructed to show that the solution involving no reflection is unstable under a small but finite disturbance. Kantrowitzs perturbation equations for non-steady, one-dimensional flow through a particular, non-uniform, nozzle are used to investigate the problem of shock formation due to expansion-disturbances. Two problems are considered the first is a complete treatment of shock formation in a de Laval nozzle the second is the case of shock formation in a decelerating supersonic flow. Results of the second case are then used to formulate a criterion for the stability of the solution for flow through a constriction without a reflected shock, under action of a small disturbance. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE