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arXiv · 1008.0051

Direct numerical simulations of statistically steady, homogeneous, isotropic fluid turbulence with polymer additives

Prasad Perlekar·Dhrubaditya Mitra·Rahul Pandit
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Abstract

We carry out a direct numerical simulation (DNS) study that reveals the effects of polymers on statistically steady, forced, homogeneous, isotropic fluid turbulence. We find clear manifestations of dissipation-reduction phenomena: On the addition of polymers to the turbulent fluid, we obtain a reduction in the energy dissipation rate, a significant modification of the fluid energy spectrum, especially in the deep-dissipation range, a suppression of small-scale intermittency, and a decrease in small-scale vorticity filaments. We also compare our results with recent experiments and earlier DNS studies of decaying fluid turbulence with polymer additives.

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Prasad Perlekar, Dhrubaditya Mitra, Rahul Pandit. 2011-01-29. Direct numerical simulations of statistically steady, homogeneous, isotropic fluid turbulence with polymer additives. https://doi.org/10.1103/physreve.82.066313

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