Abstract
Numerical simulation is used to investigate a shear layer influenced by a constant external forcing in the theory of turbulence (Kolmogorov’s problem). The dynamics of flows developing in the case of various initial streamwise velocity profiles are studied. The transition from a two-dimensional laminar flow to a three-dimensional turbulent flow is considered. It is shown that developing hydrodynamic instabilities give rise to an eddy cascade, which, in the transition of the flow to a turbulent stage, corresponds to an eddy cascade developing in the energy and, then, inertial ranges.
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Original Russian Text © S.V. Fortova, 2014, published in Zhurnal Vychislitel’noi Matematiki i Matematicheskoi Fiziki, 2014, Vol. 54, No. 3, pp. 536–544.
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Fortova, S.V. Eddy cascade of instabilities and transition to turbulence. Comput. Math. and Math. Phys. 54, 553–560 (2014). https://doi.org/10.1134/S0965542514030051
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DOI: https://doi.org/10.1134/S0965542514030051