Numerical Analysis of Gas-Particle Two-Phase Subsonic Freejets

[+] Author and Article Information
N. Hatta, H. Fujimoto

Department of Mineral Science and Technology, Kyoto University, Kyoto 606, Japan

R. Ishii

Department of Aeronautics, Kyoto University, Kyoto 606, Japan

J. Fluids Eng 114(3), 420-429 (Sep 01, 1992) (10 pages) doi:10.1115/1.2910048 History: Received July 23, 1990; Online May 23, 2008


This paper describes a numerical analysis of gas-droplet two-phase subsonic free jets in the axisymmetric system. Thermal coupling through heat transfer to droplets, as well as momentum coupling through aerodynamic drag responsible for droplet motion, is taken into account in the present numerical model. The Navier-Stokes equations for a gas-phase interacting with particle phase are solved by a time-dependent difference technique and the particle-phase is solved by a discrete particle cloud model. The jet flow structures of mixture composed of air and water-droplets with 1 μm, 5 μm, and 30 μm, respectively, in diameter are calculated with a single particle size. Some of significant characteristics for the two-phase subsonic free jets are pointed out, in particular, focusing upon the effect of particle size on the flow structure.

Copyright © 1992 by The American Society of Mechanical Engineers
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