Acta Mechanica Slovaca 2021, 25(1):34-40 | DOI: 10.21496/ams.2021.006

Numerical Investigation of the Effect of Blower Baffles on the Performance of Membrane Tubes for Water Treatment

Djamel Sahel1, *, Warda Boudaoud2, Houari Ameur3, Karima Alem2
1 Department of Technical Sciences, University Amar Telidji of Laghouat, Algeria
2 Faculty of Mechanical Engineering, USTO-MB, Oran, Algeria
3 Department of Technology, University Centre of Naama, P.O. Box 66, Naama 45000, Algeria

Effects of blower shaped baffles on the fluid dynamics and filtration flux in a membrane tube are numerically explored. Both the staggered and inline arrangements of baffles are studied. The carbonate calcium suspensions with a concentration of 5 g/L were used as a working medium. The efficiency of filtration was determined via the calculation of velocity of fluid particles, wall shear stresses and static pressure. An increase in the shear stresses on the tube surface, as well as a formation of fluid eddies were observed with the presence an array of blower baffles, resulting thus in a significant improvement of the filtration performance. The case of the staggered baffles with pith ratio of L/D = 1 and Re = 15,000 achieved an increase in the filtration flux rate by 42% and 12%, compared with unbaffled and tube with baffle orientation angle of 180°, respectively.

Keywords: Membrane tube; cross-flow; filtration; water treatment; performance of membrane.

Received: December 26, 2020; Revised: January 31, 2021; Accepted: February 7, 2021; Published: March 26, 2021  Show citation

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Sahel, D., Boudaoud, W., Ameur, H., & Alem, K. (2021). Numerical Investigation of the Effect of Blower Baffles on the Performance of Membrane Tubes for Water Treatment. Acta Mechanica Slovaca, 25(1), 34-40. doi: 10.21496/ams.2021.006
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