NEGATIVE PRESSURE TAIL OF A REFLECTED PRESSURE PULSE: COMPARISON OF A LATTICE BOLTZMANN STUDY TO THE EXPERIMENTAL RESULTS

Attila R. Imre (), Gábor Házi () and Alexey Besov ()
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Attila R. Imre: Materials Department, KFKI Atomic Energy Research Institute, H-1525 Budapest, POB 49, Hungary
Gábor Házi: Simulator Development Department, KFKI Atomic Energy Research Institute, H-1525 Budapest, POB 49, Hungary
Alexey Besov: Lavrentyev Institute of Hydrodynamics, pr. Ac. Lavrentyeva 15, 630090, Novosibirsk, Russia

International Journal of Modern Physics C (IJMPC), 2003, vol. 14, issue 10, 1321-1330

Abstract: A numerical pressure wave reflection experiment in a two-dimensional liquid and its comparison with experimental results are presented. The liquid is simulated by the pseudo-potential extension of the lattice-Boltzmann method. In the simulation a pressure pulse is produced by a point source and the resulting pressure wave is reflected back by a wettable rigid wall. Negative pressure tail can be observed at the vicinity of the wall/liquid interface. The resulted shape of the positive and the negative pressure wave is compared with experimental results obtained in an electromagnetic shock-wave generator. Good agreement has been found between the experimental and simulation results.

Keywords: Lattice Boltzmann method; pressure reflection; negative pressure (search for similar items in EconPapers)
Date: 2003
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DOI: 10.1142/S0129183103005455

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