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Inverse energy transfer mechanism in turbulent round jets

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.150
pages 142-145

Boris B. Ilyushin
Kutateladze Institute of Thermophysics SB RAS, Lavrentyev ave., 1, 630090, Novosibirsk; and Nuclear Safety Institute of RAS, Moscow, Russia; Novosibirsk State University, Novosibirsk, Russia

Michael Yu. Hrebtov
Institute of Thermophysics of SB RAS,Ac. Lavrentieva ave. 1, Novosibirsk, Russian Federation, 630090; Novosibirsk State University, Pirogova st., 2, Novosibirsk, Russian Federation, 630090

Sinopsis

The evidence of inverse spectral energy transfer in turbulent round jet is presented via Large Eddy Simulation with constant Smagorinsky model. Numerical simulation has been performed for wide range of Reynolds numbers and with applying low-amplitude inlet fluctuations and swirl. By varying these parameters, it has been possible to investigate the influence of different vortex stretching patterns on the amplitude and sign of spectral energy flux in the near region of the jet.

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