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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)5285-5289
Number of pages5
JournalJournal of Mechanical Science and Technology
Volume31
Issue number11
DOIs
Publication statusPublished - 2017 Nov 1

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Drag
Reynolds number
Torque
Drag coefficient

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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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.",
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