Twisted wake of a sphere in rotating fluid
Yoshimoto, Takahiro, Vlaskamp, Jozef H. A., Brend, M. A., Thomas, P. J. (Peter J.), Murai, Yuichi and Takeda, Yasushi (2008) Twisted wake of a sphere in rotating fluid. In: 61st Annual Meeting of the APS Division of Fluid Dynamics, San Antonio, TX, U.S.A., Nov 23-25, 2008. Published in: Bulletin of the American Physical Society, Vol.53 (No.15). pp. 124-125.Full text not available from this repository.
Official URL: http://absimage.aps.org/image/DFD08/MWS_DFD08-2008...
The Taylor-Proudman theorem has simple and interesting consequences, illustrating the fact that rotating fluids exhibit a range of phenomena not found in non-rotating fluids. The principal phenomenon of these is the formation of Taylor Columns. The phenomena occur if there are relative motions between a flow in a strongly rotating system and an obstacle in the flow. In our research, effect of the background rotation on the wake of flow past a solid sphere has been studied experimentally. The sphere is hung in a rotating tank filled with water. While the sphere is towed along the centre line of the rotation, the wake region was chased with a digital video camera and a light sheet that illuminates the area. The experiments were performed in various range of the Rossby number. The visualization from the same inertia frame yields striking results. Twisting columnar flow, which looks quite similar to Taylor Column, visualized in the wake of a sphere in rotating fluid. Taking PTV (Particle Tracking Velocimetry) analysis, velocity fields of the flow were obtained. With the help of the results, discussions about the development of the twisted columnar flow and its structure will have been taken place in the conference.
|Item Type:||Conference Item (Paper)|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TJ Mechanical engineering and machinery
|Divisions:||Faculty of Science > Engineering|
|Journal or Publication Title:||Bulletin of the American Physical Society|
|Publisher:||American Physical Society|
|Official Date:||November 2008|
|Page Range:||pp. 124-125|
|Status:||Not Peer Reviewed|
|Access rights to Published version:||Open Access|
|Conference Paper Type:||Paper|
|Title of Event:||61st Annual Meeting of the APS Division of Fluid Dynamics|
|Type of Event:||Other|
|Location of Event:||San Antonio, TX, U.S.A.|
|Date(s) of Event:||Nov 23-25, 2008|
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