Fluid and Particle Coarsening of Drag Force for Discrete-Parcel Approach

Ali Ozel, Jari Kolehmainen, Stefan Radl, Sankaran Sundaresan

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Fine-grid Euler-Lagrange simulations of gas-fluidization of uniformly sized particles have been performed in three-dimensional periodic domains. Snapshots obtained from these simulations have been systematically coarse-grained to extract filter size dependent corrections to the drag law that should be employed in coarse Euler-Euler (EE) simulations. Correction to the drag law that should be employed in Coarse Multi-Phase Particle-in-Cell (MP-PIC) model simulations is examined through a two-step process: separating the coarsening of the fluid and particle phases. It is found that the drag correction is almost entirely due to the coarsening of the fluid cells, with particle coarsening having only a weak effect. It is shown that drag correction for coarse EE and MP-PIC simulations are comparable. As a result, coarse drag models developed for EE simulations can serve as a good estimate for corrections in MP-PIC simulations, and vice versa.
Original languageEnglish
Pages (from-to)258–267
JournalChemical Engineering Science
Volume155
DOIs
Publication statusPublished - 8 Aug 2016

Fingerprint

Coarsening
Drag
Fluids
Fluidization
Gases

Keywords

  • fluidized bed
  • coarse graining

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Fields of Expertise

  • Information, Communication & Computing

Treatment code (Nähere Zuordnung)

  • Basic - Fundamental (Grundlagenforschung)

Cite this

Fluid and Particle Coarsening of Drag Force for Discrete-Parcel Approach. / Ozel, Ali; Kolehmainen, Jari; Radl, Stefan; Sundaresan, Sankaran.

In: Chemical Engineering Science, Vol. 155, 08.08.2016, p. 258–267.

Research output: Contribution to journalArticleResearchpeer-review

Ozel, Ali ; Kolehmainen, Jari ; Radl, Stefan ; Sundaresan, Sankaran. / Fluid and Particle Coarsening of Drag Force for Discrete-Parcel Approach. In: Chemical Engineering Science. 2016 ; Vol. 155. pp. 258–267.
@article{96414481d4564cdfa154c0d65df59da3,
title = "Fluid and Particle Coarsening of Drag Force for Discrete-Parcel Approach",
abstract = "Fine-grid Euler-Lagrange simulations of gas-fluidization of uniformly sized particles have been performed in three-dimensional periodic domains. Snapshots obtained from these simulations have been systematically coarse-grained to extract filter size dependent corrections to the drag law that should be employed in coarse Euler-Euler (EE) simulations. Correction to the drag law that should be employed in Coarse Multi-Phase Particle-in-Cell (MP-PIC) model simulations is examined through a two-step process: separating the coarsening of the fluid and particle phases. It is found that the drag correction is almost entirely due to the coarsening of the fluid cells, with particle coarsening having only a weak effect. It is shown that drag correction for coarse EE and MP-PIC simulations are comparable. As a result, coarse drag models developed for EE simulations can serve as a good estimate for corrections in MP-PIC simulations, and vice versa.",
keywords = "fluidized bed, coarse graining",
author = "Ali Ozel and Jari Kolehmainen and Stefan Radl and Sankaran Sundaresan",
year = "2016",
month = "8",
day = "8",
doi = "http://dx.doi.org/10.1016/j.ces.2016.08.014",
language = "English",
volume = "155",
pages = "258–267",
journal = "Chemical Engineering Science",
issn = "0009-2509",
publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Fluid and Particle Coarsening of Drag Force for Discrete-Parcel Approach

AU - Ozel, Ali

AU - Kolehmainen, Jari

AU - Radl, Stefan

AU - Sundaresan, Sankaran

PY - 2016/8/8

Y1 - 2016/8/8

N2 - Fine-grid Euler-Lagrange simulations of gas-fluidization of uniformly sized particles have been performed in three-dimensional periodic domains. Snapshots obtained from these simulations have been systematically coarse-grained to extract filter size dependent corrections to the drag law that should be employed in coarse Euler-Euler (EE) simulations. Correction to the drag law that should be employed in Coarse Multi-Phase Particle-in-Cell (MP-PIC) model simulations is examined through a two-step process: separating the coarsening of the fluid and particle phases. It is found that the drag correction is almost entirely due to the coarsening of the fluid cells, with particle coarsening having only a weak effect. It is shown that drag correction for coarse EE and MP-PIC simulations are comparable. As a result, coarse drag models developed for EE simulations can serve as a good estimate for corrections in MP-PIC simulations, and vice versa.

AB - Fine-grid Euler-Lagrange simulations of gas-fluidization of uniformly sized particles have been performed in three-dimensional periodic domains. Snapshots obtained from these simulations have been systematically coarse-grained to extract filter size dependent corrections to the drag law that should be employed in coarse Euler-Euler (EE) simulations. Correction to the drag law that should be employed in Coarse Multi-Phase Particle-in-Cell (MP-PIC) model simulations is examined through a two-step process: separating the coarsening of the fluid and particle phases. It is found that the drag correction is almost entirely due to the coarsening of the fluid cells, with particle coarsening having only a weak effect. It is shown that drag correction for coarse EE and MP-PIC simulations are comparable. As a result, coarse drag models developed for EE simulations can serve as a good estimate for corrections in MP-PIC simulations, and vice versa.

KW - fluidized bed

KW - coarse graining

UR - http://www.sciencedirect.com/science/article/pii/S0009250916304365

U2 - http://dx.doi.org/10.1016/j.ces.2016.08.014

DO - http://dx.doi.org/10.1016/j.ces.2016.08.014

M3 - Article

VL - 155

SP - 258

EP - 267

JO - Chemical Engineering Science

JF - Chemical Engineering Science

SN - 0009-2509

ER -