publication . Article . 2002

Linear eddy simulations of mixing in a homogeneous turbulent flow

Patrick McMurtry; Todd C. Gansauge; Alan R. Kerstein; Steven K. Krueger;
Open Access
  • Published: 26 Jul 2002 Journal: Physics of Fluids A: Fluid Dynamics, volume 5, pages 1,023-1,034 (issn: 0899-8213, Copyright policy)
  • Publisher: AIP Publishing
Abstract
The linear eddy mixing model is used to predict the evolution of a decaying scalar field in statistically steady homogeneous turbulent flow over a wide range of Reynolds and Schmidt numbers. Model results at low Reynolds number and order unity Schmidt number are shown to be in good overall agreement with direct numerical simulations. Results at higher Schmidt and Reynolds numbers reproduce conventional scaling properties of the scalar statistics. Predictions of Schmidt number and Reynolds number sensitivity of the evolution of the scalar concentration probability density function are presented and interpreted.
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Subjects
arXiv: Physics::Fluid Dynamics
free text keywords: General Engineering, Schmidt number, Scalar field, Reynolds number, symbols.namesake, symbols, Physics, Mechanics, Scalar (mathematics), Eddy diffusion, Statistical physics, Reynolds stress equation model, Magnetic Reynolds number, Turbulence
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