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The dependence of residence time distribution on flow in co-axial cylinder devices

Yim, SSS; Lo, MYA; Titchener-Hooker, N; Ayazi Shamlou, P; (1998) The dependence of residence time distribution on flow in co-axial cylinder devices. Bioprocess Engineering , 19 (3) pp. 221-227. 10.1007/s004490050510.

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Abstract

Numerical simulations are presented showing T the effects of operating and geometrical parameters on the transition of laminar to Taylor vortex flow for induced rotational-axial flow in the gap of a pair of rotating cylinders. These simulations indicate that annular rotational flow becomes more stable in the presence of a small degree of axial flow and as gap width increases. The effect of rotational speed on the breakdown of laminar flow is more complex and for given radius ratio and axial flow rate depends on both the speed ratio and the direction of the relation of the cylinders, counter-rotating flow generally producing a more stable flow than co-rotating. Limited experimental data are provided on the residence time distribution for flow of Newtonian liquids through the gap of two rotating cylinders. The data include results from experiments in which flow transition occurred from laminar to Taylor vortex flow. The findings from these experiments are successfully analyzed and assessed using the simulations studies.

Type: Article
Title: The dependence of residence time distribution on flow in co-axial cylinder devices
DOI: 10.1007/s004490050510
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Engineering Science Faculty Office
URI: http://discovery.ucl.ac.uk/id/eprint/77829
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