Keywords

Jet, Particle dispersion, One dimensional turbulence

Abstract

ODT (one-dimensional turbulence) simulations of particle-carrier gas interactions are performed in the jet flow configuration. Particles with different diameters are injected onto the centerline of a turbulent air jet. The particles are passive and do not impact the fluid phase. Their radial dispersion and axial velocities are obtained as functions of axial position. The time and length scales of the jet are varied through control of the jet exit velocity and nozzle diameter. Dispersion data at long times of flight for the nozzle diameter (7 mm), particle diameters (60 and 90 µm), and Reynolds numbers (10, 000–30, 000) are analyzed to obtain the Lagrangian particle dispersivity. Flow statistics of the ODT particle model are compared to experimental measurements. It is shown that the particle tracking method is capable of yielding Lagrangian prediction of the dispersive transport of particles in a round jet. In this paper, three particle-eddy interaction models (Type-I, -C, and -IC) are presented to examine the details of particle dispersion and particle-eddy interaction in jet flow.

Original Publication Citation

Guangyuan Sun, John C. Hewson, David O. Lignell, Evaluation of stochastic particle dispersion modeling in turbulent round jets, International Journal of Multiphase Flow, Volume 89, 2017, Pages 108-122, ISSN 0301-9322, https://doi.org/10.1016/j.ijmultiphaseflow.2016.10.005.

Document Type

Peer-Reviewed Article

Publication Date

2016-11-02

Publisher

Elsevier

Language

English

College

Ira A. Fulton College of Engineering

Department

Chemical Engineering

University Standing at Time of Publication

Full Professor

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