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Level-Set Techniques Applied to Unsteady Detonation Propagation
 

Summary: Level-Set Techniques Applied to Unsteady
Detonation Propagation
D. Scott Stewart1 Tariq Aslam1 Jin Yao1 and John B. Bdzil2
1
Theoretical and Applied Mechanics
University of Illinois, Urbana, Illinois, 61801, USA
2
Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA
1 Introduction
Here we are concerned with describing the dynamics of multi-dimensional det-
onation as a self-propagating surface. The detonation shock surface has been
shown under certain circumstances to be governed by an intrinsic relation be-
tween the normal shock velocity and the local curvature, obtaining a Dn -
relation. Once the initial shock position is given, the subsequent motion of the
shock can be determined by solving a scalar partial differential equation (PDE)
for the shock position. The ingredients for prediction of the motion of the shock,
include the Dn - relation, determined from theory or experiment, the ini-
tial configuration of the shock and confinement boundary conditions. Thus we
are also concerned about efficient numerical solution of the scalar PDE in three-
dimensions, in cases that include multiply-connected and disjoint shock surfaces.

  

Source: Aslam, Tariq - Los Alamos National Laboratory

 

Collections: Physics