Title :
Model-based analysis of polymer drag reduction in a turbulent channel flow
Author :
Lieu, Binh K. ; Jovanovic, Mihailo R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Minnesota, Minneapolis, MN, USA
Abstract :
We develop a model-based approach for studying the influence of polymers on drag reduction in a turbulent channel flow. Our simulation-free method utilizes turbulence modeling in conjunction with the analysis of stochastically forced linearized equations to capture the effect of velocity and polymer stress fluctuations on the turbulent viscosity and drag. We demonstrate that the essential drag-reducing trends observed in high-fidelity numerical simulations are captured by our approach.
Keywords :
channel flow; drag reduction; non-Newtonian flow; non-Newtonian fluids; polymers; stochastic processes; turbulence; viscosity; model-based analysis; polymer drag reduction; polymer stress fluctuation; simulation-free method; stochastically forced linearized equation; turbulence modeling; turbulent channel flow; turbulent viscosity; velocity effect; Approximation methods; Equations; Market research; Mathematical model; Polymers; Stress; Viscosity;
Conference_Titel :
American Control Conference (ACC), 2013
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4799-0177-7
DOI :
10.1109/ACC.2013.6579884
