Simulation of two-phase shear flows with the one dimensional turbulence model

Wu Yuxin; Philip J. Smith; Alan R. Kerstein; Lv Junfu

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Simulation of two-phase shear flows with the one dimensional turbulence model

Wu Yuxin 1 *,Philip J. Smith 2,Alan R. Kerstein 3,Lv Junfu 1

1.Department of thermal engineering, Tsinghua University

2.Institute for Clean and Secure Energy, University of Utah

3.Combustion Research Facility, Sandia National Laboratories

*Correspondence author

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Funding: Research Fund for the Doctoral Program of Higher Education （No.No.20100002120023）

Opened online: 7 March 2014

Accepted by: none

Citation: Wu Yuxin,Philip J. Smith,Alan R. Kerstein.Simulation of two-phase shear flows with the one dimensional turbulence model[OL]. [ 7 March 2014] http://en.paper.edu.cn/en_releasepaper/content/4587931

The One Dimensional Turbulence (ODT) method is used to study spatially developing particle laden shear flows based on a novel proposed particle-eddy interaction model. The instantaneous and average flow fields of the gas phase are simulated with ODT model. The particle motions are tracked with a Lagrangian scheme. When a particle enters an eddy that is given by the ODT simulation, an instantaneous particle-eddy interaction model is used to represent turbulence-induced particle dispersion. The model is validated by comparisons between numerical results and measured data of a two-phase shear flow. Particle-size dependence of particle dispersion is studied. Although turbulent mixing process strengthens the particle dispersion in shear layers, those intermediate particles whose Stokes number are close to unity tend to concentrate in a regular pattern.

Keywords:One Dimensional Turbulence; two-phase shear flow; particle-eddy interaction; Stokes Number

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