Perlekar, Prasad ; Mitra, Dhrubaditya ; Pandit, Rahul (2010) Direct numerical simulations of statistically steady, homogeneous, isotropic fluid turbulence with polymer additives Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 82 (6). 066313_1- 066313_9. ISSN 1063-651X
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Official URL: http://pre.aps.org/abstract/PRE/v82/i6/e066313
Related URL: http://dx.doi.org/10.1103/PhysRevE.82.066313
Abstract
We carry out a direct numerical simulation (DNS) study that reveals the effects of polymers on statistically steady, forced, homogeneous, and 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; and signatures of the suppression of small-scale structures, including 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.
Item Type: | Article |
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Source: | Copyright of this article belongs to The American Physical Society. |
ID Code: | 72719 |
Deposited On: | 29 Nov 2011 11:13 |
Last Modified: | 29 Nov 2011 11:13 |
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