Numerical studies of suppression of vortex shedding from a square cylinder

San Yih Lin, Pei Yu Cheng, Sheng Chang Shih

Research output: Contribution to journalArticlepeer-review

Abstract

This paper investigates the suppression of vortex shedding behind a square cylinder by a proper placement of one/two smaller cylinders (control cylinders) in the near wake of the main square cylinder. An artificial compressibility method for solving the two dimensional incompressible Navier-Stokes equations is used to study this subject. The numerical investigations indicate that (1) the installation of a control cylinder can influence the vortex shedding process on both sides; (2) the optimum position of the control cylinder reducing most of the fluid forces, such as time-mean drag and fluctuating lift and drag, is between the two curves representing the maximum mean velocity and maximum u-velocity fluctuation; and (3) to suppress the vortex shedding and to reduce the drag, placing two smaller control cylinders, each one in each side of the separated shear layers, is better than placing only one larger control cylinder in one side.

Original languageEnglish
Pages (from-to)239-247
Number of pages9
JournalJournal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers, Series C/Chung-Kuo Chi Hsueh Kung Ch'eng Hsuebo Pao
Volume18
Issue number3
Publication statusPublished - 1997 Jun 1

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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