Comparison of Boundary Conditions for Predicting the Collection Efficiency of Cyclones
Abstract
Gas-particle flow in three cyclones was numerically modeled using the Eulerian-Lagrangian approach. A tangential lift-off boundary condition was developed and included in the CFD simulations of cyclone performance via a user-defined function. Particles were considered as detached from the surface if they met the criterion of tangential lift-off; otherwise they were captured by the surface. Prediction of the collection efficiency in cyclones was conducted using the three different boundary conditions: (1) bottom trap only; (2) cone and bottom trap; and (3) the tangential lift-off, which is a combination of trap and reflect. Comparison with experimental data in literature indicates that the tangential lift-off boundary condition yields more accurate predictions than other boundary conditions.
Recommended Citation
L. Shi and D. J. Bayless, "Comparison of Boundary Conditions for Predicting the Collection Efficiency of Cyclones," Powder Technology, vol. 173, no. 1, pp. 29 - 37, Elsevier B.V, Apr 2007.
The definitive version is available at https://doi.org/10.1016/j.powtec.2006.11.022
Department(s)
Mechanical and Aerospace Engineering
Keywords and Phrases
Boundary Condition; CFD Modeling; Collection Efficiency; Cyclone; Tangential Lift-Off
International Standard Serial Number (ISSN)
0032-5910; 1873-328X
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2007 Elsevier B.V, All rights reserved.
Publication Date
10 Apr 2007
