✦ LIBER ✦

Note on a Discontinuous Change in Wake Pattern for a Rectangular Cylinder

✍ Scribed by Y. Ohya

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 251 KB
Volume: 8
Category: Article
ISSN: 0889-9746
DOI: 10.1006/jfls.1994.1015

No coin nor oath required. For personal study only.

✦ Synopsis

Base pressure measurements on rectangular cylinders with different side ratios, (d / h=0 \cdot 4) 0.6 , where (d) is the depth and (h) is the height, are presented. A cylinder with (d / h=0.5) shows characteristic time variations in base pressure, with alternatively high and low values, almost equal to those for (d / h=0.4) and 0.6 (the critical depth), respectively. This is caused by a sudden change in the flow pattern around the cylinder, associated with the vortex formation: for cylinders with depths below the critical, the flow around a cylinder initially changes gradually with increasing (d / h), but, when (d / h) reaches a transitional range around (d / h=0.5), there is an abrupt change in the flow pattern.

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