Analysis of drag reduction by polymers in a turbulent channel flow

نویسندگان

  • By B. K. Lieu
  • M. R. Jovanović
چکیده

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 direct numerical simulations are captured by our approach.

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تاریخ انتشار 2013