WIT Press


A Relaxation Method For Calculating Detonation In Condensed Explosives

Price

Free (open access)

Paper DOI

10.2495/AFM140051

Volume

82

Pages

10

Page Range

49 - 58

Published

2014

Size

390 kb

Author(s)

Ming Yu & Zhibo Ma

Abstract

Based on the relaxation approximation, the nonlinear governing equations of detonation in condensed explosives are transformed into linear relaxation systems, which can easily adopt simple and effective high resolution scheme. A fifth-order WENO reconstruction in space discretization and a fifth-order IMEX scheme of linear multistep methods with monotonicity and TVB in time discretization are utilized, where it can be avoid solving Riemann problem and calculating the Jacobian matrix of nonlinear flux, and it is not necessary to split the reaction source term. The present method is applied to simulate the steady structure of a one-dimensional planar detonation wave in condensed explosives, and the results demonstrate the excellent performance of the present method. Keywords: relaxation method, detonation wave, condensed explosives, high resolution scheme.

Keywords

relaxation method, detonation wave, condensed explosives, high resolution scheme.