Shape and drag of irregular angular particles and test dust

Brian J. Connolly; Eric Loth; C. Frederic Smith

doi:10.1016/j.powtec.2019.12.045

Shape and drag of irregular angular particles and test dust

Brian J. Connolly^*, Eric Loth, C. Frederic Smith

^*Corresponding author for this work

Materials Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Natural particles, such as sand and dust, often have irregular, angular shapes without porosity. Such sedimentary particles can have a significantly different drag coefficients than spherical particles, and a robust drag coefficient model is needed to accurately predict their trajectory in multiphase flows. Such a model requires quantitative characterization of their shape. Herein it is shown that the Corey Shape Factor is a suitable parameter to characterize particle drag coefficient for a wide variety of particles with Reynolds numbers up to 2 × 10⁵. This is accomplished by investigating the shape effects for both the Stokes drag regime and for the Newton drag regime to provide a comprehensive and validated drag model for irregular angular particles as a function of Corey Shape Factor. In addition, the shape of ISO 12103 Arizona Road Dust is measured (for the first time) to allow use of the corresponding drag model.

Original language	English
Pages (from-to)	275-285
Number of pages	11
Journal	Powder Technology
Volume	363
Early online date	30 Dec 2019
DOIs	https://doi.org/10.1016/j.powtec.2019.12.045
Publication status	Published - 1 Mar 2020

Keywords

Arizona road dust
Corey shape factor
Irregular particles
Multiphase flow
Particle drag
Sedimentary particles

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.powtec.2019.12.045

Cite this

@article{09af0a6d685f4822862d15b9d2f8d06f,

title = "Shape and drag of irregular angular particles and test dust",

abstract = "Natural particles, such as sand and dust, often have irregular, angular shapes without porosity. Such sedimentary particles can have a significantly different drag coefficients than spherical particles, and a robust drag coefficient model is needed to accurately predict their trajectory in multiphase flows. Such a model requires quantitative characterization of their shape. Herein it is shown that the Corey Shape Factor is a suitable parameter to characterize particle drag coefficient for a wide variety of particles with Reynolds numbers up to 2 × 105. This is accomplished by investigating the shape effects for both the Stokes drag regime and for the Newton drag regime to provide a comprehensive and validated drag model for irregular angular particles as a function of Corey Shape Factor. In addition, the shape of ISO 12103 Arizona Road Dust is measured (for the first time) to allow use of the corresponding drag model.",

keywords = "Arizona road dust, Corey shape factor, Irregular particles, Multiphase flow, Particle drag, Sedimentary particles",

author = "Connolly, {Brian J.} and Eric Loth and Smith, {C. Frederic}",

year = "2020",

month = mar,

day = "1",

doi = "10.1016/j.powtec.2019.12.045",

language = "English",

volume = "363",

pages = "275--285",

journal = "Powder Technology",

issn = "0032-5910",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Shape and drag of irregular angular particles and test dust

AU - Connolly, Brian J.

AU - Loth, Eric

AU - Smith, C. Frederic

PY - 2020/3/1

Y1 - 2020/3/1

N2 - Natural particles, such as sand and dust, often have irregular, angular shapes without porosity. Such sedimentary particles can have a significantly different drag coefficients than spherical particles, and a robust drag coefficient model is needed to accurately predict their trajectory in multiphase flows. Such a model requires quantitative characterization of their shape. Herein it is shown that the Corey Shape Factor is a suitable parameter to characterize particle drag coefficient for a wide variety of particles with Reynolds numbers up to 2 × 105. This is accomplished by investigating the shape effects for both the Stokes drag regime and for the Newton drag regime to provide a comprehensive and validated drag model for irregular angular particles as a function of Corey Shape Factor. In addition, the shape of ISO 12103 Arizona Road Dust is measured (for the first time) to allow use of the corresponding drag model.

AB - Natural particles, such as sand and dust, often have irregular, angular shapes without porosity. Such sedimentary particles can have a significantly different drag coefficients than spherical particles, and a robust drag coefficient model is needed to accurately predict their trajectory in multiphase flows. Such a model requires quantitative characterization of their shape. Herein it is shown that the Corey Shape Factor is a suitable parameter to characterize particle drag coefficient for a wide variety of particles with Reynolds numbers up to 2 × 105. This is accomplished by investigating the shape effects for both the Stokes drag regime and for the Newton drag regime to provide a comprehensive and validated drag model for irregular angular particles as a function of Corey Shape Factor. In addition, the shape of ISO 12103 Arizona Road Dust is measured (for the first time) to allow use of the corresponding drag model.

KW - Arizona road dust

KW - Corey shape factor

KW - Irregular particles

KW - Multiphase flow

KW - Particle drag

KW - Sedimentary particles

UR - http://www.scopus.com/inward/record.url?scp=85077791682&partnerID=8YFLogxK

U2 - 10.1016/j.powtec.2019.12.045

DO - 10.1016/j.powtec.2019.12.045

M3 - Article

AN - SCOPUS:85077791682

SN - 0032-5910

VL - 363

SP - 275

EP - 285

JO - Powder Technology

JF - Powder Technology

ER -

Shape and drag of irregular angular particles and test dust

Abstract

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this