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

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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

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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