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

作者：Lee Hojun; Lee Changhoon^*

来源：Journal of Mechanical Science and Technology, 2017, 31(11): 5285-5289.

DOI：10.1007/s12206-017-1022-3

• Drag coefficients
• Low Reynolds number flow
• Rotating sphere
• Torque modification

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 > Omega > 1.5, where Omega 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.

• 出版日期2017-11