Show simple item record

dc.contributor.authorAnqi, Ali E.
dc.contributor.authorUsta, Mustafa
dc.contributor.authorKrysko, Robert
dc.contributor.authorLee, Jung Gil
dc.contributor.authorGhaffour, NorEddine
dc.contributor.authorOztekin, Alparslan
dc.date.accessioned2019-10-27T08:03:15Z
dc.date.available2019-10-27T08:03:15Z
dc.date.issued2019-10-25
dc.identifier.citationAnqi, A. E., Usta, M., Krysko, R., Lee, J.-G., Ghaffour, N., & Oztekin, A. (2019). Numerical study of desalination by vacuum membrane distillation – Transient three-dimensional analysis. Journal of Membrane Science, 117609. doi:10.1016/j.memsci.2019.117609
dc.identifier.doi10.1016/j.memsci.2019.117609
dc.identifier.urihttp://hdl.handle.net/10754/659229
dc.description.abstractThe performance of vacuum membrane distillation (VMD) modules can be optimized through careful selection of design parameters. The present study examines how the addition of cylindrical filaments in the feed channel increases momentum mixing and the overall performance of VMD modules under different operating inlet conditions. Three-dimensional transient Computational Fluid Dynamics (CFD) simulations are conducted using Wall-Adapting Local Eddy-Viscosity (WALE) subgrid-scale Large Eddy Simulation (LES) turbulence model. Local concentration, temperature, and flux are coupled at the membrane surface to predict the rate of water vapor diffused through the membrane by Knudsen and viscous diffusion mechanisms. The predicted and measured vapor flux agrees reasonably well; validating the employed model. The small-scale eddies induced by the presence of spacer filaments promote mixing in the module, thus the temperature and concentration polarization is alleviated and the water vapor flux is immensely improved. The insertions of filaments in the feed channel increase the water permeate rate by more than 50% at higher feed flow rates and inlet temperatures. The pressure drop by the spacer reduces the allowable module length by one order of magnitude, but the module length increases two folds at feed temperature 80℃. Even though the power consumption of the module containing the filaments is increased, the addition of filaments is strongly recommended since the required power for the process could be supplied from readily available low-grade heat source.
dc.description.sponsorshipThe co-author Ali E. Anqi extends his appreciation to the Deanship of Scientific Research at King Khalid University for the support he received through General Research Project under the grant number (R.G.P.1/120/40). The research reported in this paper was also supported by King Abdullah University of Science and Technology (KAUST), Saudi Arabia.
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0376738819305319
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Membrane Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Membrane Science, [[Volume], [Issue], (2019-10-25)] DOI: 10.1016/j.memsci.2019.117609 . © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectVMD
dc.subject3-D transient
dc.subjectCFDCylindrical spacer
dc.subjectTemperature polarization coefficient
dc.subjectConcentration polarization coefficient
dc.subjectDesalination
dc.titleNumerical study of desalination by vacuum membrane distillation – Transient three-dimensional analysis
dc.typeArticle
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.identifier.journalJournal of Membrane Science
dc.rights.embargodate2021-10-25
dc.eprint.versionPost-print
dc.contributor.institutionKing Khalid University, Dept. of Mechanical Engineering, Saudi Arabia
dc.contributor.institutionKing Khalid University, Energy and Water Resources Research Unit, Saudi Arabia
dc.contributor.institutionGeorgia Institute of Technology, G.W. Woodruff School of Mechanical Engineering, USA
dc.contributor.institutionLehigh University, Dept. of Mechanical Engineering, USA
dc.contributor.institutionThermal & Fluid System Group, Korea Institute of Industrial Technology, Republic of Korea
kaust.personLee, Jung Gil
kaust.personGhaffour, Noreddine
dc.date.published-online2019-10-25
dc.date.published-print2019-10


Files in this item

Thumbnail
Name:
Numerical study of spacer in VMD pre-proof.pdf
Size:
6.054Mb
Format:
PDF
Description:
Accepted manuscript

This item appears in the following Collection(s)

Show simple item record