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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Print: 2152-5102
ISSN Online: 2152-5110

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v39.i4.60
pages 373-383

Experimental Validation of a Hydrodynamic CFD Model for a Rotating Cross-Flow MBR Module

Thomas Ruby Bentzen
Department of Civil Engineering, Aalborg University, Aalborg, Denmark
Nicolas Ratkovich
University of Los Andes
M. R. Rasmussen
Department of Civil Engineering, Aalborg University, Aalborg, Denmark
S. Madsen
Grundfos BioBooster Bjerringbro, Denmark
J. C. Jensen
Grundfos BioBooster Bjerringbro, Denmark
S. N. Bak
Grundfos BioBooster Bjerringbro, Denmark

ABSTRACT

Fouling is the main hurdle of the widespread of MBR systems. One way to decrease and/or control fouling is by hydrodynamics, increasing the liquid cross-flow velocity. In rotational cross-flow MBR systems, this is attained by the spinning of the impellers. Validation of the CFD model was made against LDA tangential velocity measurements (error less than 8 %) using water as a fluid. The shear stress over the membrane surface was inferred from the CFD simulations for water. Shear stress and area-weighted average shear stress relationships were made based on the CFD results. These relationships can be link to the energy consumption of this type of system.


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