Accession Number : AD0851855

Title :   Shock-Tube Study of Water Loaded Airblast,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Connor, Joseph G., Jr

Report Date : 25 MAR 1969

Pagination or Media Count : 60

Abstract : Some properties of a blast wave passing through water drop laden air have been simulated in a conventional shock tube. Because of the relatively short duration of shock tube flows, the investigation was limited to the simulation of the diffraction phase of the blast/drop/target interaction. Ten psi overpressure step shocks were allowed to strike a flat obstacle; the behavior of water drops near the obstacle and the stagnation pressure on the obstacle were observed. Drops break up into droplets and are accelerated toward the obstacle by the incident shock. The shock travels well on ahead of the disturbed drops, reflects from the obstacle and passes back through the moving droplets; it all but brings them to rest before they strike the obstacle. Stagnation pressure on the obstacle, observed with a piezoelectric gage facing into the incident shock front, is not dramatically influenced by the presence of the water drops. (Author)

Descriptors :   (*NUCLEAR EXPLOSIONS, AIRBURST), (*SHOCK WAVES, WATER VAPOR), SIMULATION, SHOCK WAVES, SHOCK TUBES, STAGNATION POINT, INTERACTIONS, DUST, EQUATIONS OF MOTION, DROPS, KINETIC ENERGY, PREDICTIONS.

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE