Accession Number : AD0284699

Title :   On the Distribution on Entropy within the Structure of a Normal Shock Wave,

Corporate Author : POLYTECHNIC INST OF BROOKLYN N Y

Report Date : AUG 1962

Pagination or Media Count : 1

Abstract : A unified mathematical account is given of the available knowledge, together with additional new results, of the entropy distribution through a normal shock wave. The most notable feature of this distribution is the fact that as long as heat conductivity is present the entropy will first increase within the shock until it reaches a maximum value at a certain point inside of the shock, and then diminishes to its final value behind the shock. A physical discussion of the results is given in ddition to a review of the phenomena not usually included in the analysis of shock wave structure. A systematic review of classical shock wave structure according to t e Navier-Stokes equations is included here together with a discussion of the physical validity of these equation . The structure of, and the entropy distribution within weak shock waves in general, and shock waves of arbitrary strength with Prandtl numbers of 0, 3/4 and infinity are analyzed in detail, together with qualitative results for shock waves in general. (Author)

Descriptors :   *ENTROPY, *SHOCK WAVES, *THERMAL CONDUCTIVITY, CONTINUUM MECHANICS, DIFFERENCE EQUATIONS, FLUID MECHANICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE