A computational fluid dynamics (CFD) approach for the modeling of flux in a polymeric membrane using finite volume method

Ahsan, Muhammad; Hussain, Arshad

doi:10.1051/meca/2017011

Cited by 3 publications

(3 citation statements)

References 25 publications

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“…In addition, numerical methods have predicted values at various mesh edges for different flow conditions and given more precise results [20]. Mathematical modeling is a time-and cost-saving approach for unnecessary experimental designs [21]. Therefore, CFD modeling is used for investigating the flow problems across the membrane surface [22].…”

Section: Introductionmentioning

confidence: 99%

Computational Fluid Dynamics Analysis of a Hollow Fiber Membrane Module for Binary Gas Mixture

Qadir

Ahsan

Hussain³

2023

Gases

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The membrane gas separation process has gained significant attention using the computational fluid dynamics (CFD) technique. This study considered the CFD method to find gas concentration profiles in a hollow fiber membrane (HFM) module to separate the binary gas mixture. The membrane was considered with a fiber thickness where each component’s mass fluxes could be obtained based on the local partial pressures, solubility, diffusion, and the membrane’s selectivity. COMSOL Multiphysics was used to solve the numerical solution at corresponding operating conditions and results were compared to experimental data. The two different mixtures, CO2/CH4 and N2/O2, were investigated to obtain concentration gradient and mass flux profiles of CO2 and O2 species in an axial direction. This study allows assessing the feed pressure’s impact on the HFM system’s overall performance. These results demonstrate that the increment in feed pressures decreased the membrane system’s separation performance. The impact of hollow fiber length indicates that increasing the active fiber length has a higher effective mass transfer region but dilutes the permeate-side purities of O2 (46% to 28%) and CO2 (93% to 73%). The results show that increasing inlet pressure and a higher concentration gradient resulted in higher flux through the membrane.

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Section: Introductionmentioning

confidence: 99%

Computational Fluid Dynamics Analysis of a Hollow Fiber Membrane Module for Binary Gas Mixture

Qadir

Ahsan

Hussain³

2023

Gases

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“…The simulation results of the hybrid module gave better membrane flux for both spiral wound and hollow fiber membrane module configurations. Ahsan [19] applied computational fluid dynamics (CFD) modeling to gas separation using a finite difference method in polymeric membranes. Saeed [20] described laminar flow behavior in spacers with narrow channels, and mass transfer coefficient calculated with different wire spacing.…”

Section: Introductionmentioning

confidence: 99%

A Computational Fluid Dynamics Approach for the Modeling of Gas Separation in Membrane Modules

2019

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Natural gas demand has increased rapidly across the globe in the last decade, and it is set to play an important role in meeting future energy requirements. Natural gas is mainly produced from fossil fuel and is a side product of crude oil produced beneath the earth’s crust. Materials hazardous to the environment, like CO2, H2S, and C2H4, are present in raw natural gas. Therefore, purification of the gaseous mixture is required for use in different industrial applications. A comprehensive computational fluid dynamics (CFD) model was proposed to perform the separation of natural gas from other gases using membrane modules. The CFD technique was utilized to estimate gas flow variations in membrane modules for gas separation. CFD was applied to different membrane modules to study gas transport through the membrane and flux, and to separate the binary gas mixtures. The different parameters of membrane modules, like feed and permeate pressure, module length, and membrane thickness, have been investigated successfully. CFD allows changing the specifications of membrane modules to better configure the simulation results. It was concluded that in a membrane module with increasing feed pressure, the pressure gradient also increased, which resulted in higher flux, higher permeation, and maximum purity of the permeate. Due to the high purity of the gaseous product in the permeate, the concentration polarization effect was determined to be negligible. The results obtained from the proposed CFD approach were verified by comparing with the values available in the literature.

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“…Extensive studies on jet impingement have been conducted [14][15][16]. A fluidstructure interaction simulation model of tensor skin impinging with water has been established using FE method [17,18]. Air jet impingement is a highly effective heat transfer technology, and improving its heat transfer efficiency is important for engineering and industrial applications [19,20].…”

Section: Introductionmentioning

confidence: 99%

Air jet impingement to reduce hot strip wave on a run-out table

Woo

Han

Cho

et al. 2018

Mechanics & Industry

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Traveling stability is necessary for a hot rolled strip on a run-out table before coiling in steel mills because it affects the process efficiency and the quality of the rolled products. This study proposes an air jet impingement system to reduce the hot strip wave that occurs during tensionless travel in a run-out table before the top end of the strip reaches the coiler mandrel. The finite element method was used to examine the pressure distributions on the moving strip associated with the parameters in the air jet systems. Experiments were carried out on a pilot-scale air jet impingement system to investigate the performance. The results show that the air impingement in the moving direction effectively reduces the strip wave, and the simulated results agree with the actual measurements and observations.

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A computational fluid dynamics (CFD) approach for the modeling of flux in a polymeric membrane using finite volume method

Cited by 3 publications

References 25 publications

Computational Fluid Dynamics Analysis of a Hollow Fiber Membrane Module for Binary Gas Mixture

Computational Fluid Dynamics Analysis of a Hollow Fiber Membrane Module for Binary Gas Mixture

A Computational Fluid Dynamics Approach for the Modeling of Gas Separation in Membrane Modules

Air jet impingement to reduce hot strip wave on a run-out table

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