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Numerical analysis of fluiddynamic instabilities and pressure fluctuations in the near field of a detonation

: Klomfass, A.


Hiermaier, S.:
Predictive modeling of dynamic processes : A tribute to Professor Klaus Thoma
Berlin: Springer, 2009
ISBN: 978-1-4419-0726-4
ISBN: 978-1-4419-0727-1
Book Article
Fraunhofer EMI ()

The near field of a blast wave generated by the detonation of a centrally ignited, spherical TNT charge is investigated via numerical simulation. The study focuses on the effects of the Rayleigh-Taylor and the Richtmyer-Meshkov instabilities on fluctuations in the pressure field. The numerical simulations are performed with a finite volume multi-fluid ALE-method on globally adapted grids, which stretch with the expanding blast wave. The paper describes the details of the applied methods and gives a survey on the results obtained.