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The drag force in two-fluid models of gas-solid flows

Zhang, Y.H. and Reese, J.M. (2003) The drag force in two-fluid models of gas-solid flows. Chemical Engineering Science, 58 (8). pp. 1641-1644. ISSN 0009-2509

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Abstract

Currently, the two most widespread methods for modelling the particulate phase in numerical simulations of gas-solid flows are discrete particle simulation (see, e.g., Mikami, Kamiya, & Horio, 1998), and the two-fluid approach, e.g., kinetic theory models (see, e.g., Louge, Mastorakos, & Jenkins, 1991). In both approaches the gas phase is described by a locally averaged Navier-Stokes equation and the two phases are usually coupled by a drag force. Due to the large density difference between the particles and the gas, inter-phase forces other than the drag force are usually neglected, so it plays a significant role in characterising the gas-solid flow. Yasuna, Moyer, Elliott, and Sinclair (1995) have shown that the solution of their model is sensitive to the drag coefficient. In general, the performance of most current models depends critically on the accuracy of the drag force formulation.

Item type: Article
ID code: 6100
Keywords: numerical simulation, kinetic theory, particle, beds, pipe, Mechanical engineering and machinery, Chemical engineering, Chemical Engineering(all), Chemistry(all), Applied Mathematics, Industrial and Manufacturing Engineering
Subjects: Technology > Mechanical engineering and machinery
Technology > Chemical engineering
Department: Faculty of Engineering > Mechanical and Aerospace Engineering
Depositing user: Strathprints Administrator
Date Deposited: 20 May 2008
Last modified: 24 Jul 2015 13:30
URI: http://strathprints.strath.ac.uk/id/eprint/6100

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