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Data for: Entrance effects in a radial Hele-Shaw cell: numerical and experimental study

Stergiou, G.; Eckert, K.; Schwarzenberger, K.

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

  • Reseach data in the HZDR data repository RODARE
    Publication date: 2021-03-31
    DOI: 10.14278/rodare.901

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Permalink: https://www.hzdr.de/publications/Publ-32487
Publ.-Id: 32487