Accession Number:

AD0257728

Title:

STRUCTURE AND ANALYTIC TREATMENT OF GAS-DYNAMICAL WAVE PROPAGATION WITH ENTROPY VARIATION

Descriptive Note:

Corporate Author:

BROWN UNIV PROVIDENCE R I

Personal Author(s):

Report Date:

1961-06-01

Pagination or Media Count:

1.0

Abstract:

Work performed under the contract is reviewed. The establishment of an exact, local relation between the strengths of the known and partially known waves and the rate of shock development is discussed. Its importance is that such a relation can, for the whole variety of problems covered, be put in the form of a relation between only two functions. One of them, Q, contains the influence on the shock of all that goes on in the gas ahead of the shock -- pressure wave, temperature variations, etc. -- and thus provides an immediate comparison of the relative influences of all these effects on the shock development in any particular case. The other, gamma, is a non-dimensional measure of the strength of the pressure wave catching up with the shock. The Q-gamma relation gives the exact local influence of all the processes in the gas on the rate of shock development. However, the Q-gamma relation applies primarily to initial and boundary value problems, and not to assymptotic shock propagation problems which were also derived under this contract. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE