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Turbulence in the Vicinity of a Rotating Cylinder in a Quiescent Fluid

Helge Andersson ; Bert Johansson (Institutionen för termo- och fluiddynamik) ; Lennart Löfdahl (Institutionen för termo- och fluiddynamik) ; Pål-Jahre Nielsen
Eight Turbulence Shear Flow Conference, Munchen (1991)
[Konferensbidrag, refereegranskat]

An experimental and numerical investigation of the turbulence field in the vicinity of a rotating cylinder in a quiescent fluid has been carried out. Radial distributions of mean velocity and non-vanishing Reynolds stress components have been measured using hot-wire technique, and corresponding components have been calculated with a low-Reynolds number second- moment closure model. From the measurements it can be concluded the turbulence field is established in the present set up at a Reynolds number which is roughly twenty times larger than earlier measurements have shown. Comparisons between calculations and measurements yield some deviations. However, a qualitatively good agreement is obtained. In the paper, different methods for the determination of the friction velocity are also described and discussed.



Denna post skapades 2010-08-27.
CPL Pubid: 125276

 

Institutioner (Chalmers)

Institutionen för termo- och fluiddynamik (1989-2004)

Ämnesområden

Strömningsmekanik

Chalmers infrastruktur