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Title: MFIX simulation of NETL/PSRI challenge problem of circulating fluidized bed

In this paper, numerical simulations of NETL/PSRI challenge problem of circulating fluidized bed (CFB) using the open-source code Multiphase Flow with Interphase eXchange (MFIX) are reported. Two rounds of simulation results are reported including the first-round blind test and the second-round modeling refinement. Three-dimensional high fidelity simulations are conducted to model a 12-inch diameter pilot-scale CFB riser. Detailed comparisons between numerical results and experimental data are made with respect to axial pressure gradient profile, radial profiles of solids velocity and solids mass flux along different radial directions at various elevations for operating conditions covering different fluidization regimes. Overall, the numerical results show that CFD can predict the complex gas–solids flow behavior in the CFB riser reasonably well. In addition, lessons learnt from modeling this challenge problem are presented.
Authors:
 [1] ;  [2] ;  [3]
  1. National Energy Technology Lab. (NETL), Morgantown, WV (United States); URS Corp, Morgantown, WV (United States)
  2. National Energy Technology Lab. (NETL), Morgantown, WV (United States); West Virginia Univ. Research Corporation, Morgantown, WV (United States)
  3. National Energy Technology Lab. (NETL), Morgantown, WV (United States)
Publication Date:
OSTI Identifier:
1114672
Report Number(s):
TPR-3908
Journal ID: ISSN 0009-2509
Grant/Contract Number:
FE0004000
Type:
Accepted Manuscript
Journal Name:
Chemical Engineering Science
Additional Journal Information:
Journal Volume: 84; Journal Issue: C; Journal ID: ISSN 0009-2509
Publisher:
Elsevier
Research Org:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, and Morgantown, WV (United States)
Sponsoring Org:
USDOE Office of Fossil Energy (FE)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; COMPUTERIZED SIMULATION; FLUID MECHANICS; CIRCULATING SYSTEMS; FLUIDIZED BEDS COMPUTATIONAL FLUID DYNAMICS; CIRCULATING FLUIDIZED BED; FLOW HYDRODYNAMICS; GAS-SOLIDS FLOW; CHALLENGE PROBLEM; NUMERICAL SIMULATION