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Title: CFD-DEM solution verification: Fixed-bed studies

Abstract

Fixed (frozen) particle configurations are used to study CFD-DEM convergence behavior in the limit of infinite grid resolution. A filtering scheme based on solving a diffusion equation, i.e., a Gaussian kernel, is used to interpolate particle information to the continuum grid, free of cell size limitations. A regression method is used for Richardson extrapolation of the discrete solutions to the grid-free solution. The regression method is shown to predict accurate extrapolation curves in the presence of the observed oscillatory convergence behavior. The extrapolation curve is used to complete the solution verification process by quantifying the numerical uncertainty present in the calculations. Several numerical and model parameters are studied including the spatial discretization method, the kernel width and the mean drag law. Here, a manageable level of discretization error is found with relative discretization errors generally <4%.

Authors:
 [1];  [2]
  1. National Energy Technology Lab. (NETL), Morgantown, WV (United States); AECOM, Morgantown, WV (United States)
  2. National Energy Technology Lab. (NETL), Morgantown, WV (United States)
Publication Date:
Research Org.:
National Energy Technology Lab. (NETL), Morgantown, WV (United States)
Sponsoring Org.:
FE; USDOE
OSTI Identifier:
1509722
Alternate Identifier(s):
OSTI ID: 1776167
Grant/Contract Number:  
FE0004000
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Powder Technology
Additional Journal Information:
Journal Volume: 339; Journal Issue: C; Journal ID: ISSN 0032-5910
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CFD-DEM; Solution verification; MFiX

Citation Formats

Fullmer, William D., and Musser, Jordan. CFD-DEM solution verification: Fixed-bed studies. United States: N. p., 2018. Web. doi:10.1016/j.powtec.2018.08.044.
Fullmer, William D., & Musser, Jordan. CFD-DEM solution verification: Fixed-bed studies. United States. https://doi.org/10.1016/j.powtec.2018.08.044
Fullmer, William D., and Musser, Jordan. Tue . "CFD-DEM solution verification: Fixed-bed studies". United States. https://doi.org/10.1016/j.powtec.2018.08.044. https://www.osti.gov/servlets/purl/1509722.
@article{osti_1509722,
title = {CFD-DEM solution verification: Fixed-bed studies},
author = {Fullmer, William D. and Musser, Jordan},
abstractNote = {Fixed (frozen) particle configurations are used to study CFD-DEM convergence behavior in the limit of infinite grid resolution. A filtering scheme based on solving a diffusion equation, i.e., a Gaussian kernel, is used to interpolate particle information to the continuum grid, free of cell size limitations. A regression method is used for Richardson extrapolation of the discrete solutions to the grid-free solution. The regression method is shown to predict accurate extrapolation curves in the presence of the observed oscillatory convergence behavior. The extrapolation curve is used to complete the solution verification process by quantifying the numerical uncertainty present in the calculations. Several numerical and model parameters are studied including the spatial discretization method, the kernel width and the mean drag law. Here, a manageable level of discretization error is found with relative discretization errors generally <4%.},
doi = {10.1016/j.powtec.2018.08.044},
url = {https://www.osti.gov/biblio/1509722}, journal = {Powder Technology},
issn = {0032-5910},
number = C,
volume = 339,
place = {United States},
year = {2018},
month = {8}
}

Journal Article:

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Cited by: 6 works
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