Computations of instability and turbulent mixing by Nikiforov’s model
A.N. Razin and I.V. Bolshakov
Institute of Theoretical and Mathematical Physics, Russian Federal Nuclear Center — VNIIEF, Sarov, Nizhny Novgorod Region, Russia
E-mail: A.N.Razin@vniief.ru
Keywords: turbulence, Nikiforov’s model, computations of model experiments
Abstract
The results of modeling several laboratory experiments, including a large class of advanced experimental studies of turbulent flows, are presented. The results of the Meshkov’s “cylindrical” and “planar” experiments on the confluence of two zones of turbulent mixing, the experiments of Poggi, Barre, and Uberoi have been carried out using the Nikiforov’s model. The presented results attest that the Nikiforov’s model qualitatively describes the considered class of flows if the mean gas-dynamic quantities are computed with a high accuracy in the technique, and the width of the front of the finite-difference shock wave does not depend on the size of the computational grid cell.
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