Pressure-induced deformation of pillar-type profiled membranes and its effects on flow and mass transfer

Risultato della ricerca: Article

1 Citazione (Scopus)

Abstract

In electro-membrane processes, a pressure difference may arise between solutions flowing in alternate channels. This transmembrane pressure (TMP) causes a deformation of the membranes and of the fluid compartments. This, in turn, affects pressure losses and mass transfer rates with respect to undeformed conditions and may result in uneven flow rate and mass flux distributions. These phenomena were analyzed here for round pillar-type profiled membranes by integrated mechanical and fluid dynamics simulations. The analysis involved three steps: (1) A conservatively large value of TMP was imposed, and mechanical simulations were performed to identify the geometry with the minimum pillar density still able to withstand this TMP without collapsing (i.e., without exhibiting contacts between opposite membranes); (2) the geometry thus identified was subject to expansion and compression conditions in a TMP interval including the values expected in practical applications, and for each TMP, the corresponding deformed configuration was predicted; and (3) for each computed deformed configuration, flow and mass transfer were predicted by computational fluid dynamics. Membrane deformation was found to have important effects; friction and mass transfer coefficients generally increased in compressed channels and decreased in expanded channels, while a more complex behavior was obtained for mass transfer coefficients.
Lingua originaleEnglish
pagine (da-a)32-
Numero di pagine14
RivistaComputation
Volume7
Stato di pubblicazionePublished - 2019

Fingerprint

Mass Transfer
Membrane
Mass transfer
Membranes
Mass flux
Configuration
Geometry
Collapsing
Coefficient
Fluid Dynamics
Fluid dynamics
Expected Value
Computational Fluid Dynamics
Dynamic Simulation
Alternate
Flow Rate
Friction
Computational fluid dynamics
Compression
Flow rate

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • Computer Science(all)
  • Modelling and Simulation
  • Applied Mathematics

Cita questo

@article{55416ae0d5644a5f9972096017e47891,
title = "Pressure-induced deformation of pillar-type profiled membranes and its effects on flow and mass transfer",
abstract = "In electro-membrane processes, a pressure difference may arise between solutions flowing in alternate channels. This transmembrane pressure (TMP) causes a deformation of the membranes and of the fluid compartments. This, in turn, affects pressure losses and mass transfer rates with respect to undeformed conditions and may result in uneven flow rate and mass flux distributions. These phenomena were analyzed here for round pillar-type profiled membranes by integrated mechanical and fluid dynamics simulations. The analysis involved three steps: (1) A conservatively large value of TMP was imposed, and mechanical simulations were performed to identify the geometry with the minimum pillar density still able to withstand this TMP without collapsing (i.e., without exhibiting contacts between opposite membranes); (2) the geometry thus identified was subject to expansion and compression conditions in a TMP interval including the values expected in practical applications, and for each TMP, the corresponding deformed configuration was predicted; and (3) for each computed deformed configuration, flow and mass transfer were predicted by computational fluid dynamics. Membrane deformation was found to have important effects; friction and mass transfer coefficients generally increased in compressed channels and decreased in expanded channels, while a more complex behavior was obtained for mass transfer coefficients.",
author = "Michele Ciofalo and Antonina Pirrotta and Andrea Cipollina and Micale, {Giorgio Domenico Maria} and Giuseppe Battaglia and Luigi Gurreri and {Airo' Farulla}, Girolama and Antonina Pirrotta",
year = "2019",
language = "English",
volume = "7",
pages = "32--",
journal = "Computation",
issn = "2079-3197",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

}

TY - JOUR

T1 - Pressure-induced deformation of pillar-type profiled membranes and its effects on flow and mass transfer

AU - Ciofalo, Michele

AU - Pirrotta, Antonina

AU - Cipollina, Andrea

AU - Micale, Giorgio Domenico Maria

AU - Battaglia, Giuseppe

AU - Gurreri, Luigi

AU - Airo' Farulla, Girolama

AU - Pirrotta, Antonina

PY - 2019

Y1 - 2019

N2 - In electro-membrane processes, a pressure difference may arise between solutions flowing in alternate channels. This transmembrane pressure (TMP) causes a deformation of the membranes and of the fluid compartments. This, in turn, affects pressure losses and mass transfer rates with respect to undeformed conditions and may result in uneven flow rate and mass flux distributions. These phenomena were analyzed here for round pillar-type profiled membranes by integrated mechanical and fluid dynamics simulations. The analysis involved three steps: (1) A conservatively large value of TMP was imposed, and mechanical simulations were performed to identify the geometry with the minimum pillar density still able to withstand this TMP without collapsing (i.e., without exhibiting contacts between opposite membranes); (2) the geometry thus identified was subject to expansion and compression conditions in a TMP interval including the values expected in practical applications, and for each TMP, the corresponding deformed configuration was predicted; and (3) for each computed deformed configuration, flow and mass transfer were predicted by computational fluid dynamics. Membrane deformation was found to have important effects; friction and mass transfer coefficients generally increased in compressed channels and decreased in expanded channels, while a more complex behavior was obtained for mass transfer coefficients.

AB - In electro-membrane processes, a pressure difference may arise between solutions flowing in alternate channels. This transmembrane pressure (TMP) causes a deformation of the membranes and of the fluid compartments. This, in turn, affects pressure losses and mass transfer rates with respect to undeformed conditions and may result in uneven flow rate and mass flux distributions. These phenomena were analyzed here for round pillar-type profiled membranes by integrated mechanical and fluid dynamics simulations. The analysis involved three steps: (1) A conservatively large value of TMP was imposed, and mechanical simulations were performed to identify the geometry with the minimum pillar density still able to withstand this TMP without collapsing (i.e., without exhibiting contacts between opposite membranes); (2) the geometry thus identified was subject to expansion and compression conditions in a TMP interval including the values expected in practical applications, and for each TMP, the corresponding deformed configuration was predicted; and (3) for each computed deformed configuration, flow and mass transfer were predicted by computational fluid dynamics. Membrane deformation was found to have important effects; friction and mass transfer coefficients generally increased in compressed channels and decreased in expanded channels, while a more complex behavior was obtained for mass transfer coefficients.

UR - http://hdl.handle.net/10447/371286

UR - https://res.mdpi.com/computation/computation-07-00032/article_deploy/computation-07-00032.pdf?filename=&attachment=1

M3 - Article

VL - 7

SP - 32-

JO - Computation

JF - Computation

SN - 2079-3197

ER -