Recent developments in applied mathematics and mechanics: theory, experiment and practice. Devoted to the 80th anniversary of academician N.N.Yanenko

Akademgorodok, Novosibirsk, Russia, June 24 - 29, 2001

Abstracts

Novosibirsk participants

The generation of turbulence in nonequilibrium molecular gas flows

Grigoriev Yu.N., Ershov I.V.

ICT SB RAS (Novosibirsk),
Novosibirsk State Academy Water Transport (Novosibirsk)

In the paper numerical modeling of spanwise organized vortex structure interacting with averaged shear flow was carried out. The full Navier-Stokes equations of comressible molecular gas were used for some ratios of dynamical and bulk viscosities. It is shown that with rising of bulk viscosity Reynolds stresses generated by organized structure increase in limits five-ten percentages. Simulteneously their contribution in summary Reynolds stresses is estimated as two-four percentages. Such an effect is the same order as reducing of turbulent flow resistance by riblets. In whole the results obtained demand further researches in this direction.

Full Text in Russian: PDF (574 kb)
Note. Abstracts are published in author's edition

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