Accession Number : AD0696875

Title :   SELF-SIMILAR STRONG SHOCKS WITH RADIATION IN A DECREASING EXPONENTIAL ATMOSPHERE,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE FLUID MECHANICS LAB

Personal Author(s) : Laumbach,Dallas D. ; Probstein,Ronald F.

Report Date : JUL 1969

Pagination or Media Count : 22

Abstract : The self-similar, one-dimensional flow behind a plane shock propagating upward into an exponentially decreasing atmosphere is considered. The flow is taken to be isothermal in view of the large radiation mean free paths associated with high altitudes and the intense radiation heat transfer accompanying the high temperatures characteristic of an accelerating shock wave. The equations of motion are formulated in Lagrangian coordinates and are integrated exactly for all values of the shock density ratio. Solutions are presented for the cases where the boundary conditions at the shock correspond to a supercritical shock and to a Chapman-Jouguet shock. A significant result of the analysis is that in both of these cases the shock propagates much faster than for the case of adiabatic flow. (Author)

Descriptors :   (*NUCLEAR EXPLOSIONS, SHOCK WAVES), (*SHOCK WAVES, ATMOSPHERES), THERMAL RADIATION, ATMOSPHERE MODELS, DENSITY, BOUNDARY VALUE PROBLEMS

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE