Simulation of laminar–turbulent transition in compressible Taylor–Green flow basing on quasi-gas dynamic equationsстатья
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Аннотация:We report the results of numerical simulation of laminar-turbulent transition in the Taylor-Green vortex for viscous compressible gas flow basing on quasi-gas-dynamic (QGD) equations. Here the QGD system is obtained by a temporal averaging of the Navier-Stokes equations. The additional dissipative terms in QGD system serve to model the effects of the unresolved subgrid scales. Comparison with direct numerical simulation and large eddy simulation reference data demonstrates that QGD numerical algorithm provides a uniform and adequate simulation of both laminar and turbulent evolution of the vortex for Reynolds numbers from 100 up to 5000, including transition.