The Research of the Flow Characteristics in Spiral Membrane Separator

Zhou Xiantao; Liu Hui; Wan Xuhui

doi:doi:10.11648/j.ajwse.20190501.15

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The Research of the Flow Characteristics in Spiral Membrane Separator

Zhou Xiantao, Liu Hui, Wan Xuhui

Published in American Journal of Water Science and Engineering (Volume 5, Issue 1)

Received: 24 January 2019 Accepted: 17 March 2019 Published: 8 April 2019

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Abstract

The spiral membrane separator is a novel module proposed for reducing the concentration polarization and membrane fouling of membrane separation process. This membrane separation process benefits from dean vortices produced by centrifugal instability in enhancing fluid mass transfer. A numerical stimulation of this membrane separation is presented and used to analyze the fluid flow characteristics and thoroughly understand the separation mechanism. The numerical model consists of a spiral flow path with rectangular sector. As the simulation with infiltration, the fluid domain of the ceramic membrane tube was as a porous medium domain. The standard momentum equation, added with the momentum equation source term which composed of the viscosity loss term and the inertia loss term, are figured out through the experimental characterization. In the simulation of spiral membrane separation, the Dean secondary flow structure is identified and found to enhance fluid mass transfer and to increase the permeate flux. The critical unstable state of spiral membrane separation is accordingly De=246 without the flow permeation and De=863 with the permeation, where Dean vortices cause collisions and the mixing of fluid particles. Then in the case of permeation, the fluid in separator at De=1232 is numerically simulated to show that the higher flow velocity and a large fluctuating trend of wall shear stress near the membrane surface (inside), which mainly contributed to alleviate concentration polarization and membrane fouling.

Published in	American Journal of Water Science and Engineering (Volume 5, Issue 1)
DOI	10.11648/j.ajwse.20190501.15
Page(s)	29-36
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Membrane Separation, Secondary Flow, Numerical Simulation

References

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APA Style

Zhou Xiantao, Liu Hui, Wan Xuhui. (2019). The Research of the Flow Characteristics in Spiral Membrane Separator. American Journal of Water Science and Engineering, 5(1), 29-36. https://doi.org/10.11648/j.ajwse.20190501.15

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ACS Style

Zhou Xiantao; Liu Hui; Wan Xuhui. The Research of the Flow Characteristics in Spiral Membrane Separator. Am. J. Water Sci. Eng. 2019, 5(1), 29-36. doi: 10.11648/j.ajwse.20190501.15

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AMA Style

Zhou Xiantao, Liu Hui, Wan Xuhui. The Research of the Flow Characteristics in Spiral Membrane Separator. Am J Water Sci Eng. 2019;5(1):29-36. doi: 10.11648/j.ajwse.20190501.15

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@article{10.11648/j.ajwse.20190501.15,
  author = {Zhou Xiantao and Liu Hui and Wan Xuhui},
  title = {The Research of the Flow Characteristics in Spiral Membrane Separator},
  journal = {American Journal of Water Science and Engineering},
  volume = {5},
  number = {1},
  pages = {29-36},
  doi = {10.11648/j.ajwse.20190501.15},
  url = {https://doi.org/10.11648/j.ajwse.20190501.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajwse.20190501.15},
  abstract = {The spiral membrane separator is a novel module proposed for reducing the concentration polarization and membrane fouling of membrane separation process. This membrane separation process benefits from dean vortices produced by centrifugal instability in enhancing fluid mass transfer. A numerical stimulation of this membrane separation is presented and used to analyze the fluid flow characteristics and thoroughly understand the separation mechanism. The numerical model consists of a spiral flow path with rectangular sector. As the simulation with infiltration, the fluid domain of the ceramic membrane tube was as a porous medium domain. The standard momentum equation, added with the momentum equation source term which composed of the viscosity loss term and the inertia loss term, are figured out through the experimental characterization. In the simulation of spiral membrane separation, the Dean secondary flow structure is identified and found to enhance fluid mass transfer and to increase the permeate flux. The critical unstable state of spiral membrane separation is accordingly De=246 without the flow permeation and De=863 with the permeation, where Dean vortices cause collisions and the mixing of fluid particles. Then in the case of permeation, the fluid in separator at De=1232 is numerically simulated to show that the higher flow velocity and a large fluctuating trend of wall shear stress near the membrane surface (inside), which mainly contributed to alleviate concentration polarization and membrane fouling.},
 year = {2019}
}

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TY  - JOUR
T1  - The Research of the Flow Characteristics in Spiral Membrane Separator
AU  - Zhou Xiantao
AU  - Liu Hui
AU  - Wan Xuhui
Y1  - 2019/04/08
PY  - 2019
N1  - https://doi.org/10.11648/j.ajwse.20190501.15
DO  - 10.11648/j.ajwse.20190501.15
T2  - American Journal of Water Science and Engineering
JF  - American Journal of Water Science and Engineering
JO  - American Journal of Water Science and Engineering
SP  - 29
EP  - 36
PB  - Science Publishing Group
SN  - 2575-1875
UR  - https://doi.org/10.11648/j.ajwse.20190501.15
AB  - The spiral membrane separator is a novel module proposed for reducing the concentration polarization and membrane fouling of membrane separation process. This membrane separation process benefits from dean vortices produced by centrifugal instability in enhancing fluid mass transfer. A numerical stimulation of this membrane separation is presented and used to analyze the fluid flow characteristics and thoroughly understand the separation mechanism. The numerical model consists of a spiral flow path with rectangular sector. As the simulation with infiltration, the fluid domain of the ceramic membrane tube was as a porous medium domain. The standard momentum equation, added with the momentum equation source term which composed of the viscosity loss term and the inertia loss term, are figured out through the experimental characterization. In the simulation of spiral membrane separation, the Dean secondary flow structure is identified and found to enhance fluid mass transfer and to increase the permeate flux. The critical unstable state of spiral membrane separation is accordingly De=246 without the flow permeation and De=863 with the permeation, where Dean vortices cause collisions and the mixing of fluid particles. Then in the case of permeation, the fluid in separator at De=1232 is numerically simulated to show that the higher flow velocity and a large fluctuating trend of wall shear stress near the membrane surface (inside), which mainly contributed to alleviate concentration polarization and membrane fouling.
VL  - 5
IS  - 1
ER  -

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Author Information

Zhou Xiantao

Institute of Chemical Machinery, East China University of Science and Technology, Shanghai, China
Liu Hui

Institute of Chemical Machinery, East China University of Science and Technology, Shanghai, China
Wan Xuhui

Institute of Chemical Machinery, East China University of Science and Technology, Shanghai, China

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Plain Text BibTeX RIS

APA Style

Zhou Xiantao, Liu Hui, Wan Xuhui. (2019). The Research of the Flow Characteristics in Spiral Membrane Separator. American Journal of Water Science and Engineering, 5(1), 29-36. https://doi.org/10.11648/j.ajwse.20190501.15

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ACS Style

Zhou Xiantao; Liu Hui; Wan Xuhui. The Research of the Flow Characteristics in Spiral Membrane Separator. Am. J. Water Sci. Eng. 2019, 5(1), 29-36. doi: 10.11648/j.ajwse.20190501.15

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AMA Style

Zhou Xiantao, Liu Hui, Wan Xuhui. The Research of the Flow Characteristics in Spiral Membrane Separator. Am J Water Sci Eng. 2019;5(1):29-36. doi: 10.11648/j.ajwse.20190501.15

Copy | Download

@article{10.11648/j.ajwse.20190501.15,
  author = {Zhou Xiantao and Liu Hui and Wan Xuhui},
  title = {The Research of the Flow Characteristics in Spiral Membrane Separator},
  journal = {American Journal of Water Science and Engineering},
  volume = {5},
  number = {1},
  pages = {29-36},
  doi = {10.11648/j.ajwse.20190501.15},
  url = {https://doi.org/10.11648/j.ajwse.20190501.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajwse.20190501.15},
  abstract = {The spiral membrane separator is a novel module proposed for reducing the concentration polarization and membrane fouling of membrane separation process. This membrane separation process benefits from dean vortices produced by centrifugal instability in enhancing fluid mass transfer. A numerical stimulation of this membrane separation is presented and used to analyze the fluid flow characteristics and thoroughly understand the separation mechanism. The numerical model consists of a spiral flow path with rectangular sector. As the simulation with infiltration, the fluid domain of the ceramic membrane tube was as a porous medium domain. The standard momentum equation, added with the momentum equation source term which composed of the viscosity loss term and the inertia loss term, are figured out through the experimental characterization. In the simulation of spiral membrane separation, the Dean secondary flow structure is identified and found to enhance fluid mass transfer and to increase the permeate flux. The critical unstable state of spiral membrane separation is accordingly De=246 without the flow permeation and De=863 with the permeation, where Dean vortices cause collisions and the mixing of fluid particles. Then in the case of permeation, the fluid in separator at De=1232 is numerically simulated to show that the higher flow velocity and a large fluctuating trend of wall shear stress near the membrane surface (inside), which mainly contributed to alleviate concentration polarization and membrane fouling.},
 year = {2019}
}

Copy | Download

TY  - JOUR
T1  - The Research of the Flow Characteristics in Spiral Membrane Separator
AU  - Zhou Xiantao
AU  - Liu Hui
AU  - Wan Xuhui
Y1  - 2019/04/08
PY  - 2019
N1  - https://doi.org/10.11648/j.ajwse.20190501.15
DO  - 10.11648/j.ajwse.20190501.15
T2  - American Journal of Water Science and Engineering
JF  - American Journal of Water Science and Engineering
JO  - American Journal of Water Science and Engineering
SP  - 29
EP  - 36
PB  - Science Publishing Group
SN  - 2575-1875
UR  - https://doi.org/10.11648/j.ajwse.20190501.15
AB  - The spiral membrane separator is a novel module proposed for reducing the concentration polarization and membrane fouling of membrane separation process. This membrane separation process benefits from dean vortices produced by centrifugal instability in enhancing fluid mass transfer. A numerical stimulation of this membrane separation is presented and used to analyze the fluid flow characteristics and thoroughly understand the separation mechanism. The numerical model consists of a spiral flow path with rectangular sector. As the simulation with infiltration, the fluid domain of the ceramic membrane tube was as a porous medium domain. The standard momentum equation, added with the momentum equation source term which composed of the viscosity loss term and the inertia loss term, are figured out through the experimental characterization. In the simulation of spiral membrane separation, the Dean secondary flow structure is identified and found to enhance fluid mass transfer and to increase the permeate flux. The critical unstable state of spiral membrane separation is accordingly De=246 without the flow permeation and De=863 with the permeation, where Dean vortices cause collisions and the mixing of fluid particles. Then in the case of permeation, the fluid in separator at De=1232 is numerically simulated to show that the higher flow velocity and a large fluctuating trend of wall shear stress near the membrane surface (inside), which mainly contributed to alleviate concentration polarization and membrane fouling.
VL  - 5
IS  - 1
ER  -

Copy | Download