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1 PublicationEntrance effects in a radial Hele-Shaw cell: numerical and experimental study
Stergiou, G.; Eckert, K.; Schwarzenberger, K.
Abstract
Hele-Shaw cells are a frequently used tool in various fields of chemical technology, and in environmental and biomedical engineering. The flow conditions near the inlet of a radial Hele-Shaw cell significantly affect the outcome of its technological applications. The present work combines Computational Fluid Dynamics (CFD) and micro-Particle Image Velocimetry (μPIV) to explain the entrance phenomena, i.e. flow detachment and vortex generation, in radial Hele-Shaw cells. The experiments show that the flow detachment is determined by the inlet flow Reynolds number, Re. Two-dimensional numerical simulations were employed to further investigate the role of the gap width, w to inlet diameter, D aspect ratio, w/D. The resulting flow regime map is divided by a transitional Re number, Ret, that depends on the aspect ratio. A further parametric study examining how Re and the aspect ratio affect the reattachment length yields an empirical correlation in power-law form. Finally, the impact of the inlet's geometrical features is briefly examined. The current work can be used as a design guide for future radial HS engineering applications.
Keywords: Hele-Shaw cell; flow separation; laminar flow; reattachment length; CFD; μPIV
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Data for: Entrance effects in a radial Hele-Shaw cell: numerical and …
ROBIS: 32487 HZDR-primary research data are used by this (Id 32479) publication
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Chemical Engineering Journal 428(2022)1489, 131146
Online First (2021) DOI: 10.1016/j.cej.2021.131146
ISSN: 1385-8947
Cited 7 times in Scopus
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