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A Cell-Centered Lagrangian Method Based on Characteristics Theory For Numerically Simulating Condensed Explosive Detonation

Authors:
Ming Yu
Zhibo Ma

Keywords: cell-centered Lagrangian method; characteristics theory; condensed explosive; detonation

Abstract:
The paper proposes a cell-centered Lagrangian method for numerically simulating two-dimensional detonation flows in condensed explosives. The main feature of this method is that the velocity and pressure at the mesh vertex are computed using the characteristics theory in terms of the linearized partial differential equations about the detonation flows, and then the velocity and pressure are used to update the grid coordinates and evaluate the numerical flux across the cell interface. This vertex solver gives the instantaneous evolution solutions for velocity and pressure, which is regarded as a generalization of Riemann solver for one-dimensional Godunov scheme in multidimensional flows.

Pages: 10 to 13

Copyright: Copyright (c) IARIA, 2016

Publication date: October 9, 2016

Published in: conference

ISSN: 2308-4499

ISBN: 978-1-61208-506-7

Location: Venice, Italy

Dates: from October 9, 2016 to October 13, 2016