Drag reduction by polymer additives in decaying turbulence
نویسندگان
چکیده
منابع مشابه
Drag reduction by polymer additives in decaying turbulence.
We present results from a systematic numerical study of decaying turbulence in a dilute polymer solution by using a shell-model version of the finitely extensible nonlinear elastic and Peterlin equations. Our study leads to an appealing definition of the drag reduction for the case of decaying turbulence. We exhibit several new results, such as the potential-energy spectrum of the polymer, hith...
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In the present study, the mechanism of turbulent drag reduction by polymer additives in a fully developed channel ow is investigated using direct numerical simulation. In order to see the elastic e ect on turbulent drag reduction, the dilute polymer solution is expressed with an Oldroyd-B model which shows a linear elastic behavior. Simulations are carried out by changing the Weissenberg number...
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ژورنال
عنوان ژورنال: Physical Review E
سال: 2005
ISSN: 1539-3755,1550-2376
DOI: 10.1103/physreve.72.017301