Reduced‐order modeling of flow and concentration polarization in membrane systems with permeation

Chan, Foo Sheng and Tan, Chee Keong and Ratnayake, Pesila and Liang, Y. Y. (2020) Reduced‐order modeling of flow and concentration polarization in membrane systems with permeation. AIChE Journal, 66 (4). pp. 1-11. ISSN 1547-5905. (In Press / Online First) (In Press / Online First)

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Modeling of concentration polarization (CP) is important to ensure a successful membrane system design. Although computational fluid dynamics (CFD) remains a common approach to study CP, it usually requires a long computational time to investigate a short simulated time in membrane systems. In this work, we proposed a reduced‐order model to predict CP in membrane systems with permeation. We modify Berman's velocity profile and incorporated it to the reduced‐order model of the mass‐transfer equation. The proposed model shows excellent agreement with CFD results, while offering a reduction of two orders of magnitude in computational time. We also validate the model with published experimental data and demonstrate that the model can predict permeate flux in close proximity under various operating conditions. The proposed model offers an attractive alternative to solving the full Navier–Stokes and mass‐transfer equations, and opens the possibility to further investigate various approaches to reduce concentration polarization.

Item Type: Article
Additional Information: Indexed by Scopus; ISI Journal Citation Reports © Ranking: 2018:31/138 (Engineering, Chemical)
Uncontrolled Keywords: Concentration polarization, Reduced-order model, Varying permeate flux, Reverse osmosis, Membrane
Subjects: T Technology > TP Chemical technology
Faculty/Division: Centre of Excellence: Centre of Excellence for Advanced Research in Fluid Flow
Faculty of Chemical & Natural Resources Engineering
Institute of Postgraduate Studies
Depositing User: Noorul Farina Arifin
Date Deposited: 13 Jan 2020 01:00
Last Modified: 12 Aug 2020 02:19
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