Turbulence in the Vicinity of a Rotating Cylinder in a Quiescent Fluid
Paper i proceeding, 1991

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.

Författare

Helge Andersson

Bert Johansson

Chalmers, Institutionen för termo- och fluiddynamik

Lennart Löfdahl

Chalmers, Institutionen för termo- och fluiddynamik

Pål-Jahre Nielsen

Eight Turbulence Shear Flow Conference, Munchen

Ämneskategorier

Strömningsmekanik och akustik