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Spin‐up in a semicircular cylinder
Author(s) -
Andersson H. I.,
Billdal J. T.,
Van Heijst G. J. F.
Publication year - 1992
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.1650150502
Subject(s) - cylinder , spin up , mechanics , boundary layer , finite volume method , spin (aerodynamics) , flow (mathematics) , ekman number , rest (music) , grid , geometry , physics , boundary (topology) , geology , mathematics , computer science , mathematical analysis , acoustics , thermodynamics , operating system
This paper addresses the spin‐up from rest of a free‐surface fluid confined in a cylindrical container with a semicircular cross‐section. The flow in the various stages of the spin‐up process has been calculated numerically by using the finite‐volume technique on a three‐dimensional grid. Local grid refinement was applied in order to capture the effects of the boundary layer at the lateral boundaries and of the Ekman layer at the bottom. The numerical results agree very well with laboratory observations.