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A Generalized Model for Predicting Critical Deposition Velocity for Particle Entrained in Horizontal Liquid and Gas Pipe Flows

[+] Author Affiliations
Kamyar Najmi, Siamack A. Shirazi, Selen Cremaschi, Brenton McLaury

The University of Tulsa, Tulsa, OK

Paper No. FEDSM2013-16251, pp. V01CT20A006; 12 pages
doi:10.1115/FEDSM2013-16251
From:
  • ASME 2013 Fluids Engineering Division Summer Meeting
  • Volume 1C, Symposia: Gas-Liquid Two-Phase Flows; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Liquid-Solids Flows; Multiscale Methods for Multiphase Flow; Noninvasive Measurements in Single and Multiphase Flows; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes; Transport Phenomena in Mixing; Turbulent Flows: Issues and Perspectives
  • Incline Village, Nevada, USA, July 7–11, 2013
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5556-0
  • Copyright © 2013 by ASME

abstract

Critical deposition velocity, as it is used in this paper, is the velocity required to keep particles moving in horizontal pipes all times. There are many models that have been developed and reported in the literature, but they normally fail to agree with all available data. Thus, based on the previous work a generalized model is proposed to predict critical velocity in horizontal pipelines that can be generalized to handle many different flow conditions including particles moving in gas or liquids. The proposed model takes into account different physical parameters which are normally important in determining critical velocities. The results from this model are compared with experimental data available in the literature for particles entrained in gas or liquid flows. The experimental data that is considered includes particles such as sand, glass, coal, plastic, iron, magnate, PVC, Tuff and salt being transported in fluids like water, oil, kerosene, ethylene glycol and air. The model predictions are compared to other models that are available in the literature. For liquid flow the results are also compared with the Oroskar and Turian model as it was calibrated with many experimental data for particles transported in liquids. The model results for gas flow cases are compared with the Saks model that was specifically developed for gas and the Oroskar and Turian model. These comparisons show even the preliminary form of this generalized model improves the prediction of critical velocity for both liquid and gas flows.

Copyright © 2013 by ASME

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