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CFD modeling of the continuous chemical interaction between the multiphase flows of the pulp and paper digester using the mass transfer scheme
Mälardalen University, School of Sustainable Development of Society and Technology. Mälardalen University, School of Business, Society and Engineering, Future Energy Center.
Mälardalen University, School of Sustainable Development of Society and Technology. Mälardalen University, School of Business, Society and Engineering, Future Energy Center.ORCID iD: 0000-0002-7233-6916
2011 (English)In: World Journal of Modelling and Simulation, ISSN 1746-7233, Vol. 7, no 3, 189-205 p.Article in journal (Refereed) Published
Abstract [en]

This paper describes the construction of a computational fluid dynamics (CFD) code for the physical structure of a pulping reactor and prediction of the continuous chemical reactions inside the digester. Models of chemical interactions between the wood chips and liquor flow in a pulping digester were designed using the finite volume method (FVM) in FLUENT. The quality of the produced pulp was computed throughout the reactor from the top inlet to the bottom outlet by modeling the Kappa number, a dimensionless parameter that describes lignin content. A conjugated mass transfer and porous media model was tested for its usefulness in avoiding the effect of granular instability and divergence on the chemical reaction model.

Place, publisher, year, edition, pages
2011. Vol. 7, no 3, 189-205 p.
Keyword [en]
CFD, Chemical reaction, Eulerian, Kappa number, Mass transfer, Pulp digester
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:mdh:diva-15768Scopus ID: 2-s2.0-83655190844OAI: oai:DiVA.org:mdh-15768DiVA: diva2:562499
Available from: 2012-10-24 Created: 2012-10-24 Last updated: 2015-11-19Bibliographically approved

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