The swirling flows of water and CTAC (cetyltrimethyl ammonium chloride) surfactant solutions in an open cylindrical container with a rotating disc at the bottom were experimentally investigated by use of a double-pulsed PIV (particle image velocimetry) system. The flow pattern in the meridional plane for water at the present high Reynolds number of differed greatly from that at low Reynolds numbers, and an inertia-driven vortex was pushed to the corner between the free surface and the cylindrical wall by a counter-rotating vortex caused by vortex breakdown. For the surfactant solution flow, the inertia-driven vortex located at the corner between the bottom and the cylindrical wall whereas an elasticity-driven reverse vortex governed the majority of the flow field. The rotation of the fluid caused a deformation of the free surface with a dip at the center. The dip was largest for the water case and decreased with increasing surfactant concentration. The value of the dip was related to determining the solution viscoelasticity for the onset of drag reduction.
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e-mail: yasuo@rs.noda.tus.ac.jp
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January 2006
Special Section On The Fluid Mechanics And Rheology Of Nonlinear Materials At The Macro, Micro And Nano Scale
Swirling Flow of a Viscoelastic Fluid With Free Surface—Part I: Experimental Analysis of Vortex Motion by PIV
Jinjia Wei,
Jinjia Wei
State Key Laboratory of Multiphase Flow in Power Engineering,
Xi’an Jiaotong University
, Xi’an, 710049, People’s Republic of China
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Fengchen Li,
Fengchen Li
2nd Department, Oshima-lab, Institute of Industrial Science (IIS),
The University of Tokyo
, Meguro-ku, Tokyo, 153-5805, Japan
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Bo Yu,
Bo Yu
Oil and Gas Storage and Transportation Engineering,
China University of Petroleum
, Beijing, 102249, People’s Republic of China
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Yasuo Kawaguchi
Yasuo Kawaguchi
Department of Mechanical Engineering, Faculty of Science and Technology,
e-mail: yasuo@rs.noda.tus.ac.jp
Tokyo University of Science
, Noda, China, 278-8510, Japan
Search for other works by this author on:
Jinjia Wei
State Key Laboratory of Multiphase Flow in Power Engineering,
Xi’an Jiaotong University
, Xi’an, 710049, People’s Republic of China
Fengchen Li
2nd Department, Oshima-lab, Institute of Industrial Science (IIS),
The University of Tokyo
, Meguro-ku, Tokyo, 153-5805, Japan
Bo Yu
Oil and Gas Storage and Transportation Engineering,
China University of Petroleum
, Beijing, 102249, People’s Republic of China
Yasuo Kawaguchi
Department of Mechanical Engineering, Faculty of Science and Technology,
Tokyo University of Science
, Noda, China, 278-8510, Japane-mail: yasuo@rs.noda.tus.ac.jp
J. Fluids Eng. Jan 2006, 128(1): 69-76 (8 pages)
Published Online: August 22, 2005
Article history
Received:
June 25, 2004
Revised:
August 22, 2005
Citation
Wei, J., Li, F., Yu, B., and Kawaguchi, Y. (August 22, 2005). "Swirling Flow of a Viscoelastic Fluid With Free Surface—Part I: Experimental Analysis of Vortex Motion by PIV." ASME. J. Fluids Eng. January 2006; 128(1): 69–76. https://doi.org/10.1115/1.2136928
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