Drag coefficient of a spherical particle attached on the flat surface

Chun Nan Liu; Chih Liang Chien; Chu Chun Lo; Guan Yu Lin; Sheng Chieh Chen; Chuen-Tinn Tsai

doi:10.4209/aaqr.2011.05.0069

Drag coefficient of a spherical particle attached on the flat surface

Chun Nan Liu, Chih Liang Chien, Chu Chun Lo, Guan Yu Lin, Sheng Chieh Chen, Chuen-Tinn Tsai^*

^*Corresponding author for this work

Institute of Environmental Engineering

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

12 Scopus citations

Abstract

The previous analytical solution for the drag coefficient (C _d) for a spherical particle attached on the flat surface, which was derived by O'Neill (1968), is only valid in the creeping flow conditions. It is important to extend O'Neill's formula to cover a wide range of particle Reynolds number (Re _p). In this study, the drag coefficient was calculated numerically to cover Rep from 0.1 to 250. For a particle suspended in the air, an empirical drag coefficient exists, which is defined as C _d = f × 24/Re _p, where f is a correction factor depending on Re _p. The applicability of the correction factor f for O'Neill's analytical equation for the spherical particle attached on the flat surface for Re _p = 0.1 to 250 was examined in this study.

Original language	English
Pages (from-to)	482-486
Number of pages	5
Journal	Aerosol and Air Quality Research
Volume	11
Issue number	5
DOIs	https://doi.org/10.4209/aaqr.2011.05.0069
State	Published - 1 Oct 2011

Keywords

Boundary layer
Drag coefficient
Numerical simulation
Reynolds number

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10.4209/aaqr.2011.05.0069

Cite this

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title = "Drag coefficient of a spherical particle attached on the flat surface",

abstract = "The previous analytical solution for the drag coefficient (C d) for a spherical particle attached on the flat surface, which was derived by O'Neill (1968), is only valid in the creeping flow conditions. It is important to extend O'Neill's formula to cover a wide range of particle Reynolds number (Re p). In this study, the drag coefficient was calculated numerically to cover Rep from 0.1 to 250. For a particle suspended in the air, an empirical drag coefficient exists, which is defined as C d = f × 24/Re p, where f is a correction factor depending on Re p. The applicability of the correction factor f for O'Neill's analytical equation for the spherical particle attached on the flat surface for Re p = 0.1 to 250 was examined in this study.",

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AU - Liu, Chun Nan

AU - Chien, Chih Liang

AU - Lo, Chu Chun

AU - Lin, Guan Yu

AU - Chen, Sheng Chieh

AU - Tsai, Chuen-Tinn

PY - 2011/10/1

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AB - The previous analytical solution for the drag coefficient (C d) for a spherical particle attached on the flat surface, which was derived by O'Neill (1968), is only valid in the creeping flow conditions. It is important to extend O'Neill's formula to cover a wide range of particle Reynolds number (Re p). In this study, the drag coefficient was calculated numerically to cover Rep from 0.1 to 250. For a particle suspended in the air, an empirical drag coefficient exists, which is defined as C d = f × 24/Re p, where f is a correction factor depending on Re p. The applicability of the correction factor f for O'Neill's analytical equation for the spherical particle attached on the flat surface for Re p = 0.1 to 250 was examined in this study.

KW - Boundary layer

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KW - Numerical simulation

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Drag coefficient of a spherical particle attached on the flat surface

Abstract

Keywords

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