

Author: Wang T. Li P. Bai J.S. Tao G. Wang B. Zou L.Y.
Publisher: NRC Research Press
E-ISSN: 1208-6045|93|10|1124-1130
ISSN: 1208-6045
Source: Canadian Journal of Physics, Vol.93, Iss.10, 2015-01, pp. : 1124-1130
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
The subgrid-scale (SGS) terms of turbulence transport are modelled by the stretched-vortex SGS stress model, and a large-eddy simulation code multi-viscous fluid and turbulence (MVFT) is developed to investigate the MVFT problems. Then one AWE shock tube experiment of interface instability is simulated numerically by MVFT code, which reproduces the development process of the interface. The obtained numerical images of interface evolution and wave structures in flow field are consistent with the experimental results. The evolution of perturbed interface and propagation of shock waves in flow field and their interactions are analyzed in detail. The statistics features of turbulence mixing in the form of finer quantities, such as the turbulent kinetic energy, enstrophy, density variance, and turbulent mass flux are investigated, which also proves that the SGS model has a key role in large-eddy simulation. The turbulent kinetic energy and enstrophy decay with time as a power law.
Related content


Ablative Richtmyer-
Le Journal de Physique IV, Vol. 133, Iss. issue, 2006-06 ,pp. :








Planar Richtmyer-Meshkov Instabilities and Transition
Journal of Physics: Conference Series , Vol. 318, Iss. 3, 2011-12 ,pp. :