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THMT-12. Proceedings of the Seventh International Symposium On Turbulence Heat and Mass Transfer
September, 24-27, 2012, Palermo, Italy

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal


ISBN Print: 978-1-56700-302-4

ISSN: 2377-2816

Unsteady-laminar to turbulent flow in a spacer-filled channel

pages 2063-2070
DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.2130
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ABSTRACT

A combined numerical and experimental investigation have been carried out to study the flow behaviour in a spacer-filled channel, representative of those used in spiral-wound membrane modules. The fluid flow characteristics are presented for Reynolds numbers, ranging from 100 to 1000. It was found that the flow in this particular geometry moves parallel to the spacer filaments. Swirl-like motions (secondary flow) were observed in the main flow streams. The flow mechanisms, transition process and onset of turbulence in a spacer-filled channel are investigated, using the velocity spectra at different Reynolds numbers.

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