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Unsteady flow of a micro‐polar fluid between two concentric circular cylinders
Author(s) -
Ramkissoon H.,
Majumdar S. R.
Publication year - 1977
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450550408
Subject(s) - concentric , cylinder , angular velocity , mechanics , flow (mathematics) , polar , physics , polar coordinate system , mathematics , classical mechanics , geometry , potential flow around a circular cylinder , mathematical analysis , open channel flow , astronomy
This paper examines the flow of a micropolar fluid between concentric cylinders in the case where the outer cylinder is held fixed while the inner cylinder is subjected to an arbitrary time dependent angular velocity. Here integral transforms are effectively used to obtain closed form solutions. The special case of a periodic angular velocity is then considered. The results obtained are compared as far as possible with their classical counterparts and some of the physical quantities have been represented graphically. It has been found that, in comparison to classical fluids, an increased couple is experienced by the inner cylinder.