Accession Number:

ADA248634

Title:

Computations of Detonation Structure: The Influence of Model Input Parameters

Descriptive Note:

Interim rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Report Date:

1992-04-10

Pagination or Media Count:

22.0

Abstract:

We describe analyses and numerical computations that examine the validity of certain common simplifications in the chemical and thermophysical model on the calculation of detonation properties. In particular, we examine the effects of 1 approximations of the temperature dependence of the specific heat C, and the ratio of specific heats Gamma Csub p Csub v in a detailed numerical simulation of detonation in a mixture of hydrogen and oxygen mixture, 2 varying the heat release, and 3 varying the chemical induction time, and compare all of those approximations to a computation that uses a detailed model of the chemical kinetics and correct thermophysics. Finally, we describe computations of detonations in mixtures of hydrogen and oxygen diluted with argon an carbon tetrafluoride and show how the numerical model correctly predicts the trends in the detonation as the percentage of carbon tetrafluoride is increased.

Subject Categories:

  • Physical Chemistry
  • Explosions

Distribution Statement:

APPROVED FOR PUBLIC RELEASE