CFD studies coupling hydrodynamics and solid‐liquid mass transfer in slug flow for matter removal from tube walls

Silva, Mónica C. F.; Araújo, José D. P.; Campos, João B. L. M.

doi:10.1002/aic.15610

Title: CFD studies coupling hydrodynamics and solid‐liquid mass transfer in slug flow for matter removal from tube walls

Abstract

Organic matter deposition on internal surfaces constitutes a drawback that impairs the efficiency of several industrial processes. To overcome this problem, sparging a train of bubbles could be useful since its presence strongly increases the wall shear stress. A detailed numerical mass‐transfer study between a finite soluble wall and the liquid around a rising Taylor bubble was performed, simultaneously solving velocity and concentration fields. The bubble passage throws solute backward and is responsible for radial dispersion. There is also an increase in the transfer rate with enhancements between 10 and 20% (depending on liquid average velocity and bubble length) compared to single‐phase flow. Mass‐transfer coefficients along the different hydrodynamic regions around the bubble nose, liquid film, and wake were characterized and their values compared with those from literature. The results suggest a promising potential of bubble train flow to enhance organic matter removal from walls in biological systems. © 2016 American Institute of Chemical Engineers AIChE J , 63: 2420–2439, 2017

Authors:

Silva, Mónica C. F. ^[1]; Araújo, José D. P. ^[1]; Campos, João B. L. M. ^[1]

Centro de Estudos de Fenómenos de Transporte, Departamento de Engenharia Química Faculdade de Engenharia da Universidade do Porto Rua Dr. Roberto Frias Porto 4200‐465 Portugal

Publication Date:: Sat Dec 24 00:00:00 EST 2016

Sponsoring Org.:: USDOE

OSTI Identifier:: 1401726

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: AIChE Journal

Additional Journal Information:: Journal Name: AIChE Journal Journal Volume: 63 Journal Issue: 6; Journal ID: ISSN 0001-1541

Publisher:: Wiley Blackwell (John Wiley & Sons)

Country of Publication:: United States

Language:: English

Citation Formats


                    Silva, Mónica C. F., Araújo, José D. P., and Campos, João B. L. M. CFD studies coupling hydrodynamics and solid‐liquid mass transfer in slug flow for matter removal from tube walls.  United States: N. p., 2016. 
Web.  doi:10.1002/aic.15610.

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                    Silva, Mónica C. F., Araújo, José D. P., & Campos, João B. L. M. CFD studies coupling hydrodynamics and solid‐liquid mass transfer in slug flow for matter removal from tube walls.  United States.  https://doi.org/10.1002/aic.15610

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                    Silva, Mónica C. F., Araújo, José D. P., and Campos, João B. L. M. Sat .  
"CFD studies coupling hydrodynamics and solid‐liquid mass transfer in slug flow for matter removal from tube walls".  United States.  https://doi.org/10.1002/aic.15610.

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@article{osti_1401726,

  title        = {CFD studies coupling hydrodynamics and solid‐liquid mass transfer in slug flow for matter removal from tube walls},

  author       = {Silva, Mónica C. F. and Araújo, José D. P. and Campos, João B. L. M.},

  abstractNote = {Organic matter deposition on internal surfaces constitutes a drawback that impairs the efficiency of several industrial processes. To overcome this problem, sparging a train of bubbles could be useful since its presence strongly increases the wall shear stress. A detailed numerical mass‐transfer study between a finite soluble wall and the liquid around a rising Taylor bubble was performed, simultaneously solving velocity and concentration fields. The bubble passage throws solute backward and is responsible for radial dispersion. There is also an increase in the transfer rate with enhancements between 10 and 20% (depending on liquid average velocity and bubble length) compared to single‐phase flow. Mass‐transfer coefficients along the different hydrodynamic regions around the bubble nose, liquid film, and wake were characterized and their values compared with those from literature. The results suggest a promising potential of bubble train flow to enhance organic matter removal from walls in biological systems. © 2016 American Institute of Chemical Engineers AIChE J , 63: 2420–2439, 2017},

  doi          = {10.1002/aic.15610},

  journal      = {AIChE Journal},

  number       = 6,

  volume       = 63,

  place        = {United States},

  year         = {Sat Dec 24 00:00:00 EST 2016},

  month        = {Sat Dec 24 00:00:00 EST 2016}

}

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Title: CFD studies coupling hydrodynamics and solid‐liquid mass transfer in slug flow for matter removal from tube walls

Abstract

Citation Formats

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Three-dimensional CFD modelling of PEM fuel cells: An investigation into the effects of water flooding journal, June 2009

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Vertical slug flow in laminar regime in the liquid and turbulent regime in the bubble wake—Comparison with fully turbulent and fully laminar regimes journal, July 2008

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Micro PEM fuel cell current collector design and optimization with CFD 3D modeling
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