Please use this identifier to cite or link to this item: https://doi.org/10.1142/S0217984905009900
Title: Effect of surface roughness on mass transfer in a flat-plate microchannel bioreactor
Authors: Zeng, Y. 
Lee, T.S. 
Yu, P. 
Low, H.T. 
Keywords: Flat-plate microchannel bioreactor
Mass transfer
Numerical modeling
Surface roughness
Issue Date: 20-Dec-2005
Source: Zeng, Y., Lee, T.S., Yu, P., Low, H.T. (2005-12-20). Effect of surface roughness on mass transfer in a flat-plate microchannel bioreactor. Modern Physics Letters B 19 (28-29) : 1559-1562. ScholarBank@NUS Repository. https://doi.org/10.1142/S0217984905009900
Abstract: Surface roughness exists in most microfluidic devices due to the microfabrication technique or particle adhesion. In this study, a numerical model based on Finite Volume Method has been developed to simulate the mass transfer in a flat-plate microchannel bioreactor with semi-circular protrusions uniformly distributed on the bottom. The results show that the mass transfer in rough channel is enhanced, as shown by lower minimum species concentration in the rough channel compared with that in smooth channel. Non-dimensional parameters such as Peclet number (Pe), Damkohler number (Da) and the roughness size ratio (β) can influence the effect of roughness greatly. However, it is important to ensure that the minimum species concentration in the rough channel is adequate for cell growth. The results would provide guidance on the perfusion requirements to avoid solute depletion or toxicity during cell culture. © World Scientific Publishing Company.
Source Title: Modern Physics Letters B
URI: http://scholarbank.nus.edu.sg/handle/10635/73404
ISSN: 02179849
DOI: 10.1142/S0217984905009900
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