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ISSN オンライン: 2642-0554

DNS OF SWIRLING FLOW IN A ROTATING PIPE

Bikash Sahoo
Department of Mathematics National Institute of Technology, Rourkela Odisha, INDIA

Frode Nygard
Statoil Laberget 114, 4020 Stavanger, NORWAY

Helge I. Andersson
Department of Energy and Process Engineering, Norwegian University of Science and Technology, Trondheim, Norway

要約

Numerical simulation is carried out to study the combined effects of rotation and induced swirl on the fully developed turbulent pipe flow at Reynolds number Reb = 4900, based on the bulk velocity and the pipe diameter. The swirl is induced by a body force in the tangential momentum equation, which produces a tangential velocity field in the near wall region. Results from a single swirl along with five different strengths of the rotation are considered. The effects of rotation and swirl on turbulent structures are investigated in detail. Also instantaneous axial velocity fluctuations are provided to visualize the effects on the turbulent structures.