publication . Article . Preprint . 2010

Probability density function modeling of scalar mixing from concentrated sources in turbulent channel flow

Zafer Boybeyi; Jozsef Bakosi; Pasquale Franzese;
Open Access
  • Published: 22 Mar 2010 Journal: Physics of Fluids, volume 19, page 115,106 (issn: 1070-6631, eissn: 1089-7666, Copyright policy)
  • Publisher: AIP Publishing
Abstract
Dispersion of a passive scalar from concentrated sources in fully developed turbulent channel flow is studied with the probability density function (PDF) method. The joint PDF of velocity, turbulent frequency and scalar concentration is represented by a large number of Lagrangian particles. A stochastic near-wall PDF model combines the generalized Langevin model of Haworth & Pope with Durbin's method of elliptic relaxation to provide a mathematically exact treatment of convective and viscous transport with a non-local representation of the near-wall Reynolds stress anisotropy. The presence of walls is incorporated through the imposition of no-slip and impermeabi...
Subjects
arXiv: Physics::Fluid Dynamics
free text keywords: Condensed Matter Physics, Physics - Fluid Dynamics, Physics - Computational Physics, 76F25, 76F55, 76M35, Reynolds stress, Probability density function, Scalar (physics), Turbulence, Open-channel flow, Pipe flow, Micromixing, Classical mechanics, Mechanics, Stochastic process, Physics
Related Organizations
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