Drag and torque acting on a sphere rotating in the streamwise direction for the Reynolds number range of 0.02 ≤ Re ≤ 200

Hojun Lee; Changhoon Lee

doi:10.1007/s12206-017-1022-3

Drag and torque acting on a sphere rotating in the streamwise direction for the Reynolds number range of 0.02 ≤ Re ≤ 200

Hojun Lee, Changhoon Lee

Department of Computational Science and Engineering

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

1 Citation (Scopus)

Abstract

Uniform flow past a sphere rotating in the streamwise direction is investigated numerically for the purpose of understanding the effect of rotation of the sphere on flow characteristics. The range of the Reynolds number considered is 0.02 ≤ Re ≤ 200. The rotational speed of the sphere is in the range of 0 ≤ Ω ≤ 1.5, where Ω is the maximum azimuthal velocity of the sphere normalized by the freestream velocity. New formulae for drag coefficient and torque are provided in terms of the Reynolds number and rotation speed.

Original language	English
Pages (from-to)	5285-5289
Number of pages	5
Journal	Journal of Mechanical Science and Technology
Volume	31
Issue number	11
DOIs	https://doi.org/10.1007/s12206-017-1022-3
Publication status	Published - 2017 Nov 1

Bibliographical note

Funding Information:
This research was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (Grant No. 2017R1D1A1B03028900).

Publisher Copyright:
© 2017, The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature.

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering

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10.1007/s12206-017-1022-3

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abstract = "Uniform flow past a sphere rotating in the streamwise direction is investigated numerically for the purpose of understanding the effect of rotation of the sphere on flow characteristics. The range of the Reynolds number considered is 0.02 ≤ Re ≤ 200. The rotational speed of the sphere is in the range of 0 ≤ Ω ≤ 1.5, where Ω is the maximum azimuthal velocity of the sphere normalized by the freestream velocity. New formulae for drag coefficient and torque are provided in terms of the Reynolds number and rotation speed.",

author = "Hojun Lee and Changhoon Lee",

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AU - Lee, Hojun

AU - Lee, Changhoon

N1 - Funding Information: This research was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (Grant No. 2017R1D1A1B03028900). Publisher Copyright: © 2017, The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature.

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N2 - Uniform flow past a sphere rotating in the streamwise direction is investigated numerically for the purpose of understanding the effect of rotation of the sphere on flow characteristics. The range of the Reynolds number considered is 0.02 ≤ Re ≤ 200. The rotational speed of the sphere is in the range of 0 ≤ Ω ≤ 1.5, where Ω is the maximum azimuthal velocity of the sphere normalized by the freestream velocity. New formulae for drag coefficient and torque are provided in terms of the Reynolds number and rotation speed.

AB - Uniform flow past a sphere rotating in the streamwise direction is investigated numerically for the purpose of understanding the effect of rotation of the sphere on flow characteristics. The range of the Reynolds number considered is 0.02 ≤ Re ≤ 200. The rotational speed of the sphere is in the range of 0 ≤ Ω ≤ 1.5, where Ω is the maximum azimuthal velocity of the sphere normalized by the freestream velocity. New formulae for drag coefficient and torque are provided in terms of the Reynolds number and rotation speed.

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Drag and torque acting on a sphere rotating in the streamwise direction for the Reynolds number range of 0.02 ≤ Re ≤ 200

Abstract

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