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Title: Verification of sub-grid filtered drag models for gas-particle fluidized beds with immersed cylinder arrays

Abstract

The accuracy of coarse-grid multiphase CFD simulations of fluidized beds may be improved via the inclusion of filtered constitutive models. In our previous study (Sarkar et al., Chem. Eng. Sci., 104, 399-412), we developed such a set of filtered drag relationships for beds with immersed arrays of cooling tubes. Verification of these filtered drag models is addressed in this work. Predictions from coarse-grid simulations with the sub-grid filtered corrections are compared against accurate, highly-resolved simulations of full-scale turbulent and bubbling fluidized beds. The filtered drag models offer a computationally efficient yet accurate alternative for obtaining macroscopic predictions, but the spatial resolution of meso-scale clustering heterogeneities is sacrificed.

Authors:
 [1];  [1];  [2]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  2. Princeton Univ., NJ (United States)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1158480
Report Number(s):
PNNL-SA-101111
Journal ID: ISSN 0009-2509; AA9010100
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Chemical Engineering Science
Additional Journal Information:
Journal Volume: 114; Journal ID: ISSN 0009-2509
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; Computational fluid dynamics (CFD); Cylinder arrays; Filtered models; Fluidization; Multiphase flow; Scale-up

Citation Formats

Sarkar, Avik, Sun, Xin, and Sundaresan, Sankaran. Verification of sub-grid filtered drag models for gas-particle fluidized beds with immersed cylinder arrays. United States: N. p., 2014. Web. doi:10.1016/j.ces.2014.04.018.
Sarkar, Avik, Sun, Xin, & Sundaresan, Sankaran. Verification of sub-grid filtered drag models for gas-particle fluidized beds with immersed cylinder arrays. United States. https://doi.org/10.1016/j.ces.2014.04.018
Sarkar, Avik, Sun, Xin, and Sundaresan, Sankaran. Wed . "Verification of sub-grid filtered drag models for gas-particle fluidized beds with immersed cylinder arrays". United States. https://doi.org/10.1016/j.ces.2014.04.018.
@article{osti_1158480,
title = {Verification of sub-grid filtered drag models for gas-particle fluidized beds with immersed cylinder arrays},
author = {Sarkar, Avik and Sun, Xin and Sundaresan, Sankaran},
abstractNote = {The accuracy of coarse-grid multiphase CFD simulations of fluidized beds may be improved via the inclusion of filtered constitutive models. In our previous study (Sarkar et al., Chem. Eng. Sci., 104, 399-412), we developed such a set of filtered drag relationships for beds with immersed arrays of cooling tubes. Verification of these filtered drag models is addressed in this work. Predictions from coarse-grid simulations with the sub-grid filtered corrections are compared against accurate, highly-resolved simulations of full-scale turbulent and bubbling fluidized beds. The filtered drag models offer a computationally efficient yet accurate alternative for obtaining macroscopic predictions, but the spatial resolution of meso-scale clustering heterogeneities is sacrificed.},
doi = {10.1016/j.ces.2014.04.018},
url = {https://www.osti.gov/biblio/1158480}, journal = {Chemical Engineering Science},
issn = {0009-2509},
number = ,
volume = 114,
place = {United States},
year = {2014},
month = {4}
}