Control of flow-induced noise behind a circular cylinder using splitter plates
SCIE
SCOPUS
- Title
- Control of flow-induced noise behind a circular cylinder using splitter plates
- Authors
- You, DH; Choi, H; Choi, MR; Kang, SH
- Date Issued
- 1998-11
- Publisher
- AIAA
- Abstract
- Laminar vortex sheddings behind a circular cylinder with and without splitter plates attached to the cylinder base at the Reynolds numbers of 100 and 160 are simulated by solving the unsteady two-dimensional incompressible Navier-Stokes equations. The Strouhal number, lift, and drag rapidly change with the length of the splitter plate. Acoustic source functions are obtained from the computed near-field velocity and pressure using the Curie's solution of the Lighthill acoustic analogy. In the case of no splitter plate, the volume quadrupole noise is small at a low Mach number, compared with the surface dipole noise from the cylinder. When a splitter plate is attached to the cylinder, there are significant modifications of the dipole and quadrupole sources. Changes in the noise sources at Re = 100 are very different from those at Re = 160, and their differences are closely related to the secondary vortex generated at the tip of the splitter plate, Scattering effects at the edge of the splitter plate are also considered.
- Keywords
- SOUND; WAKE; COMPUTATION; STEP
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/16888
- DOI
- 10.2514/2.322
- ISSN
- 0001-1452
- Article Type
- Article
- Citation
- AIAA JOURNAL, vol. 36, no. 11, page. 1961 - 1967, 1998-11
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- There are no files associated with this item.
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