Accession Number:

ADA067334

Title:

Variable Energy blast Waves and Two Phase Detonations

Descriptive Note:

Final rept. 1 Jan 1973-30 Sep 1978

Corporate Author:

CONNECTICUT UNIV STORRS DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

• Dabora, E. K.

Report Date:

1979-02-01

Pagination or Media Count:

52.0

Abstract:

The results of the research work performed to determine the role of blastwaves and mass addition within the reaction zone of spray detonations are summarized. Since most of the findings have been published in the literature, abstracts of the relevent publications have been included. One of the publications describes a model for spray detonations in which the relevant parameters are found to be the ignition delay and the energy temporal variation within the reaction zone. The model can predict the minimum energy for direct initiation when these parameters are known. Recent experiments on laser ignition of fuel drops to simulate the mass addition aspect within the reaction zone are reported in detail. These experiments indicate the mass addition effects are small when compared to the blast wave effects. However, they reveal that, under some conditions, explosive combustion can take place. The experiments appear to be the first of their kind and open up new avenues for research on liquid propellants, fuel-air explosions and detonation transfer.

Descriptors:

• *DETONATION WAVES
• *BLAST WAVES
• LASER BEAMS
• COMBUSTION
• FUEL AIR EXPLOSIVES
• LIQUID PROPELLANTS
• IGNITION
• FUEL SPRAYS
• TWO PHASE FLOW
• ENERGY TRANSFER
• TIME DEPENDENCE
• DROPS

Subject Categories:

• Explosions
• Combustion and Ignition
• Fuels

Distribution Statement:

APPROVED FOR PUBLIC RELEASE