Numerical Simulations of Gaseous Detonations

Detonations with One-Step Chemistry

One-dimensional Simulations

The following graphs display front pressure histories of one-dimensional detonation simulations for the popular case

%MATHMODE{ \gamma=1.2,\; E_0=50,\; Q_0=50\;. }%

The limit of absolute stability for this configuration is around 1.73. The numerical method is Strang-splitting, which uses a hybrid Roe-HLL scheme with MUSCL reconstruction as hydrodynamic transport scheme. Automatic time step adjustment for CCFL = 0.9.

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Subsections

• Overdrive factor 1.1 to 1.36
• Overdrive factor 1.38 to 1.54
• Overdrive factor 1.58 to 1.72
• Overdrive factor 1.74 to 2.0

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-- RalfDeiterding - 18 Dec 2004