LAPSE:2019.0887
Published Article
LAPSE:2019.0887
Wave Characteristics of Coagulation Bath in Dry-Jet Wet-Spinning Process for Polyacrylonitrile Fiber Production Using Computational Fluid Dynamics
Son Ich Ngo, Young-Il Lim, Soo-Chan Kim
July 31, 2019
In this work, a three-dimensional volume-of-fluid computational fluid dynamics (VOF-CFD) model was developed for a coagulation bath of the dry-jet wet spinning (DJWS) process for the production of polyacrylonitrile (PAN)-based carbon fiber under long-term operating conditions. The PAN-fiber was assumed to be a deformable porous zone with variations in moving speed, porosity, and permeability. The Froude number, interpreted as the wave-making resistance on the liquid surface, was analyzed according to the PAN-fiber wind-up speed ( v P A N ). The effect of the PAN speed on the reflection and wake flow formed by drag between a moving object and fluid is presented. A method for tracking the wave amplitude with time is proposed based on the iso-surface of the liquid volume fraction of 0.95. The wave signal for 30 min was divided into the initial and resonance states that were distinguished at 8 min. The maximum wave amplitude was less than 0.5 mm around the PAN-fiber inlet nozzle for v P A N = 0.1−0.5 m/s in the resonance state. The VOF-CFD model is useful in determining the maximum v P A N under an allowable air gap of the DJWS process.
Keywords
coagulation bath, Computational Fluid Dynamics, dry-jet wet spinning process, maximum wave amplitude, polyacrylonitrile-based carbon fiber, wave resonance
Suggested Citation
Ngo SI, Lim YI, Kim SC. Wave Characteristics of Coagulation Bath in Dry-Jet Wet-Spinning Process for Polyacrylonitrile Fiber Production Using Computational Fluid Dynamics. (2019). LAPSE:2019.0887
Author Affiliations
Ngo SI: Center of Sustainable Process Engineering (CoSPE), Department of Chemical Engineering, Hankyong National University, Jungang-ro 327, Anseong-si 17579, Korea [ORCID]
Lim YI: Center of Sustainable Process Engineering (CoSPE), Department of Chemical Engineering, Hankyong National University, Jungang-ro 327, Anseong-si 17579, Korea
Kim SC: Research Center for Applied Human Sciences, Department of Electrical and Electronic Engineering, Hankyong National University, Jungang-ro 327, Anseong-si 17579, Korea [ORCID]
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Journal Name
Processes
Volume
7
Issue
5
Article Number
E314
Year
2019
Publication Date
2019-05-25
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr7050314, Publication Type: Journal Article
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LAPSE:2019.0887
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doi:10.3390/pr7050314
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Jul 31, 2019
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CC BY 4.0
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Jul 31, 2019
 
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Calvin Tsay
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