Keywords

Optical fibers, Turbulence theory and modelling, Eddies, Aerodynamics, Fluid mixing, Multiphase flows, Turbulent flows, Ecology, Autocorrelation, Stochastic processes

Abstract

Lagrangian particle dispersion is studied using the one-dimensional turbulence (ODT) model in homogeneous decaying turbulence configurations. The ODT model has been widely and successfully applied to a number of reacting and nonreacting flow configurations, but only limited application has been made to multiphase flows. Here, we present a version of the particle implementation and interaction with the stochastic and instantaneous ODT eddy events. The model is characterized by comparison to experimental data of particle dispersion for a range of intrinsic particle time scales and body forces. Particle dispersion, velocity, and integral time scale results are presented. The particle implementation introduces a single model parameter βp, and sensitivity to this parameter and behavior of the model are discussed. Good agreement is found with experimental data and the ODT model is able to capture the particle inertial and trajectory crossing effects. These results serve as a validation case of the multiphase implementations of ODT for extensions to other flow configurations.

Original Publication Citation

Guangyuan Sun, David O. Lignell, John C. Hewson, Craig R. Gin; Particle dispersion in homogeneous turbulence using the one-dimensional turbulence model. Physics of Fluids 1 October 2014; 26 (10): 103301. https://doi.org/10.1063/1.4896555

Document Type

Peer-Reviewed Article

Publication Date

2014-10-09

Publisher

American Institute of Physics

Language

English

College

Ira A. Fulton College of Engineering

Department

Chemical Engineering

University Standing at Time of Publication

Full Professor

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