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Computation 2019, 7(1), 8; https://doi.org/10.3390/computation7010008

Numerical Simulation on Supercritical CO2 Fluid Dynamics in a Hollow Fiber Membrane Contactor

1
Centro de Innovación en Ingeniería Aplicada, Departamento de Computación e Industrias, Universidad Catolica del Maule, Avda. San Miguel 3605, Talca, Chile
2
Departamento de Obras Civiles, Universidad Catolica del Maule, Avda. San Miguel 3605, Talca, Chile
3
Departamento de Ingeniería Química, Universidad de Santiago de Chile, Avda. Libertador Bernardo O’Higgins 3303, Santiago, Chile
*
Author to whom correspondence should be addressed.
Received: 27 November 2018 / Revised: 28 December 2018 / Accepted: 10 January 2019 / Published: 15 January 2019
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Abstract

This research answers the following question: What is the fluid dynamic behavior of a supercritical fluid (SCF) inside a membrane module? At this time, there is very little or no reported information that can provide an answer to this question. The research studies related to the themes of supercritical CO2 (SC-CO2), hollow fiber membrane contactors (HFMCs), and numerical simulations have mainly reported on 2D simulations, but in this work, 3D profiles are presented. Simulations were performed based on the experimental results and other simulations, using the geometry of a commercial module. The results were mainly based on the different operating conditions and geometric dimensions. A mesh study was performed to ensure the mesh non-dependence of the results presented here. It was observed that the velocity profile developed at 10 mm from the wall of the supercritical CO2 entrance pipe. A profile equilibrium around the fiber close to the entrance of the module was achieved in the experimental hollow fiber membrane contactor when compared to the case of the commercial hollow fiber membrane contactor. The results of this research provided a visualization of the boundary layer, which did not cover the entire fiber length. Finally, the results of this paper are interesting for technical applications and contribute to our understanding of the hydrodynamics of SCFs. View Full-Text
Keywords: numerical simulation; fluid dynamics; supercritical CO2; membrane contactor numerical simulation; fluid dynamics; supercritical CO2; membrane contactor
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Valdés, H.; Unda, K.; Saavedra, A. Numerical Simulation on Supercritical CO2 Fluid Dynamics in a Hollow Fiber Membrane Contactor. Computation 2019, 7, 8.

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