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

Avik Sarkar; Xin Sun; Sankaran Sundaresan

doi:10.1016/j.ces.2014.04.018

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

Avik Sarkar, Xin Sun, Sankaran Sundaresan

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31 Scopus citations

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., 2013 Chem. Eng. Sci., 104, pp. 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.

Original language	English (US)
Pages (from-to)	144-154
Number of pages	11
Journal	Chemical Engineering Science
Volume	114
DOIs	https://doi.org/10.1016/j.ces.2014.04.018
State	Published - Jul 26 2014

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

Keywords

Computational fluid dynamics (CFD)
Cylinder arrays
Filtered models
Fluidization
Multiphase flow
Scale-up

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10.1016/j.ces.2014.04.018

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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., 2013 Chem. Eng. Sci., 104, pp. 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.",

keywords = "Computational fluid dynamics (CFD), Cylinder arrays, Filtered models, Fluidization, Multiphase flow, Scale-up",

author = "Avik Sarkar and Xin Sun and Sankaran Sundaresan",

note = "Funding Information: This work, performed at the Pacific Northwest National Laboratory, was funded by the U.S. Department of Energy , Office of Fossil Energy׳s Carbon Capture Simulation Initiative (CCSI) through the National Energy Technology Laboratory . Pacific Northwest National Laboratory is operated by Battelle Memorial Institute for the U.S. Department of Energy under Contract no. DE-AC05-76RL01830 . We also express our gratitude to Jean-Fran{\c c}ois Dietiker and Janine Carney (National Energy Technology Laboratory) and to Sebastien Dartevelle (Los Alamos National Laboratory) for their assistance with this work.",

year = "2014",

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doi = "10.1016/j.ces.2014.04.018",

language = "English (US)",

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journal = "Chemical Engineering Science",

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AU - Sarkar, Avik

AU - Sun, Xin

AU - Sundaresan, Sankaran

N1 - Funding Information: This work, performed at the Pacific Northwest National Laboratory, was funded by the U.S. Department of Energy , Office of Fossil Energy׳s Carbon Capture Simulation Initiative (CCSI) through the National Energy Technology Laboratory . Pacific Northwest National Laboratory is operated by Battelle Memorial Institute for the U.S. Department of Energy under Contract no. DE-AC05-76RL01830 . We also express our gratitude to Jean-François Dietiker and Janine Carney (National Energy Technology Laboratory) and to Sebastien Dartevelle (Los Alamos National Laboratory) for their assistance with this work.

PY - 2014/7/26

Y1 - 2014/7/26

N2 - 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., 2013 Chem. Eng. Sci., 104, pp. 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.

AB - 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., 2013 Chem. Eng. Sci., 104, pp. 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.

KW - Computational fluid dynamics (CFD)

KW - Cylinder arrays

KW - Filtered models

KW - Fluidization

KW - Multiphase flow

KW - Scale-up

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SN - 0009-2509

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SP - 144

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JO - Chemical Engineering Science

JF - Chemical Engineering Science

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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