Author： Härtel C. Kleiser L. Michaud M. Stein C.F.
Publisher： Springer Publishing Company
ISSN： 0022-0833
Source： Journal of Engineering Mathematics, Vol.32, Iss.2-3, 1997-10, pp. : 103-120
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
A direct numerical simulation approach for the study of gravity currents in a plane channel is described. The numerical method employed is based on a mixed spectral/spectral-element discretization in space together with finite differences in time. For the validation of the code, simulations of Rayleigh–Bénard convection are performed and the results are compared with theoretical predictions and reference data from the literature. The dynamics of gravity currents is then studied by simulations of two-dimensional lock-exchange flow. The results obtained in these simulations are in good agreement with recent experimental data. By a systematic variation of the Grashof number the influence of viscous diffusion on the characteristics of the propagating fronts is assessed.
Related content
Access to resources
Recommend
Direct Numerical Simulation of Supersonic Jet Flow
Journal of Engineering Mathematics, Vol. 32, Iss. 2-3, 1997-10 ,pp. :
Compressible effects on a temporal direct numerical simulation
ESAIM: Proceedings, Vol. 7, Iss. issue, 1999-01 ,pp. :