Turbulent Particle Dispersion Modeling with PDF Equation Based on Langevin Equation of Fluid Velocity

XU Jiangrong; ZHANG Ping; CHEN Jiangxing; DING Ning

XU Jiangrong, ZHANG Ping, CHEN Jiangxing, DING Ning. Turbulent Particle Dispersion Modeling with PDF Equation Based on Langevin Equation of Fluid VelocityJ. Chinese Journal of Computational Physics, 2010, 27(4): 518-526.

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Turbulent Particle Dispersion Modeling with PDF Equation Based on Langevin Equation of Fluid Velocity

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A Langevin equation of fluctuating velocity of fluid ‘seen’ by particle is simplified in Minier's model.Autocorrelation of turbulence fluctuating velocity is obtained,which has non-isotropic property.Corresponding PDF model of particle is obtained and a simplified form is used to predict turbulent particle dispersion in grid-generating turbulence flow.PDF model is solved analytically and solutions are compared with experimental results of Wells and Stock.

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Turbulent Particle Dispersion Modeling with PDF Equation Based on Langevin Equation of Fluid Velocity

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