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Session: Multiphase and non-Newtonian flows 2
Session starts: Thursday 27 August, 10:30
Presentation starts: 10:30
Room: Room D

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Niranjan Reddy Challabotla (Norwegian University of Science and Technology)
Lihao Zhao (Norwegian University of Science and Technology)
Helge I. Andersson (Norwegian University of Science and Technology)

Abstract:
A suspension of oblate spheroidal (disk-like) particles in turbulent channel flow has been investigated with focus on the translational and rotational particle statistics. The effects of particle aspect ratio and inertia have been explored. The disk-like particles exhibited a significant preferential orientation in the plane of the mean shear. The influence of the particle shape on the orientation and rotation diminished as translational inertia increased from Stokes number 1 to 30. Isotropization of both orientation and rotation could be observed in the core region of the channel. Keywords: oblate spheroids, preferential orientation, shape effects, inertia effects