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Thermophysics and Aeromechanics

2007 year, number 2

Surface instability of the liquid turbulent flows in the open inclined channels

E.A. Demekhin, E.M. Shapar, and A.S. Selin
Kuban State University, South Scientific Center of RAS, Krasnodar, Russia
Pages: 223–230


The flow of a viscous liquid layer in an open inclined channel under the turbulent mode is considered in this paper. To describe turbulent viscosity, the Van Driest model is used. The spectrum of characteristic values of the problem on linear stability of a plane-parallel flow is studied numerically. Parameters of the maximal growth waves are found out, the surface tension effect is studied, and theoretical results are compared with experimental data.