Suppression of low-frequency variations in vortex shedding by a splitter plate behind a bluff body

Jiun-Jih Miau, C. C. Yang, Jung-Hua Chou, K. R. Lee

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Measurements of instantaneous pressure fluctuations on a trapezoidal cross-section cylinder indicate that the low-frequency variations embedded in the vortex-shedding process can be successfully suppressed by insertion of a splitter plate whose length is twice the maximum width of the trapezoidal cylinder. The experiments were performed at Reynolds numbers in a range of 5 × 103 to 4·5 × 104. Spanwise correlation of the pressure fluctuations measured on the cylinder further indicates that the suppression of low-frequency variations improves the degree of two-dimensionality of vortex shedding. These findings are attributed to the presence of the splitter plate having an effect on stabilizing the vortex formation length which is comparable to the length of the splitter plate, thus eliminating the low-frequency variations embedded in the base pressure.

Original languageEnglish
Pages (from-to)897-912
Number of pages16
JournalJournal of Fluids and Structures
Volume7
Issue number8
DOIs
Publication statusPublished - 1993 Jan 1

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Suppression of low-frequency variations in vortex shedding by a splitter plate behind a bluff body'. Together they form a unique fingerprint.

  • Cite this