DETONATION, SHOCK, AND CHEMICAL REACTION PROCESSES IN EXPLOSIVE DISSEMINATION: BOUNDARY STABILITY AND CAVITATION
Abstract
The purpose of this study of boundary instability was to conduct a brief experimental investigation of the explosive-product/liquid interface and the liquid-air interface to ascertain if simple theoretical predictions are realized. The study was carried out with a Beckman Whitley Model 189 framing camera. Framing camera pictures of the explosive-products/liquid interface under the influence of motion imparted by an explosive show: (1) Some mixing occurs when the shock from the detonation enters the liquid. This early jetting apparently results from irregularities of the explosive surface, (2) If the jetting referred to above is pronounced it is not prevented by thin metal walls between the explosive and the liquid, and (3) For the geometry studied the product-liquid interface is quite stable in the period between entry of the shock into the liquid at the explosive-liquid boundary and its exit at the liquid-air boundary. (There is no acceleration during this period). Framing pictures taken after the shock reaches the liquid-air interface show: (1) Rapid acceleration of the products takes place when the first rarefaction reaches the product-liquid interface; (This is a period when instabilities might develop.), and (2) the rarefaction wave reflected from the liquid-air surface causes fine random cavitation. There is no experimental evidence of layered cavitation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1967
- Accession Number
- AD0820740
Entities
People
- J. G. Berke
- L. B. Seely
Organizations
- SRI International