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arXiv · 1604.02941

Mixing in modulated turbulence. Numerical results

Yuyao Yang·Robert Chahine·Robert Rubinstein·Wouter Bos
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Abstract

Direct numerical simulations are carried out to investigate scalar mixing in an isotropic turbulent flow with a time-periodic forcing. For high amplitudes of the modulation, it is shown that the average mixing rate is negatively affected at low frequencies. In this limit the mixing time scale increases, whereas the typical velocity timescale decreases. We further determine the frequency response of scalar statistics to a periodic scalar-forcing.

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Yuyao Yang, Robert Chahine, Robert Rubinstein, Wouter Bos. 2016-04-11. Mixing in modulated turbulence. Numerical results. https://arxiv.org/abs/1604.02941

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