Computational Fluid Dynamics Modeling of Forward Osmosis Processes

Fynn Jerome Aschmoneit*, Claus Hélix-Nielsen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

Abstract

This chapter presents the Computational Fluid Dynamics (CFD) process sequence for the development of a CFD model, designed for the analysis of ideal packing densities in forward osmosis (FO) hollow ber modules. Each CFD process is individually outlined, followed by its application in building the CFD model, giving a good overview of CFD modeling in FO processes. The developed CFD model shows good agreement with experimental data, for draw concentration of up to 1M. The subsequent packing density analysis shows severe external concentration polarization (ECP) eects for increasing packing densities, yielding a maximum water ux for packing densities between 45% and 80%. Nevertheless, the total permeation rate still grows with increasing packing density: The eect of increasing membrane surface exceeds the increasing ECP, as the packing density is increased. However, the enormous pressure drop rise along the membrane module limits ecient applications with high packing densities.
Original languageEnglish
Title of host publicationCurrent Trends and Future Developments on (Bio-) Membranes: Recent Advances on Reverse and Forward Osmosis
EditorsAngelo Basile, Alfredo Cassano, Navin Rastogi
Number of pages25
PublisherElsevier
Publication date2019
Chapter5
ISBN (Print)9780128167779
ISBN (Electronic)9780128172995
Publication statusPublished - 2019

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