(hsv:(TEKNIK OCH TEKNOLOGIER) hsv:(Materialteknik)) lar1:(mdh) pers:(Dahlquist Erik 1951)
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Modelling of the channelling phenomenon of the pulping digester using porous Media
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- Pourian, Jan, 1962- (author)
- Mälardalens högskola,Akademin för hållbar samhälls- och teknikutveckling,PRO
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- Dahlquist, Erik, 1951- (author)
- Mälardalens högskola,Akademin för hållbar samhälls- och teknikutveckling,PRO
- (creator_code:org_t)
- Fredrice : SIMS electronic, 2009
- 2009
- English.
- In: <em>SIMS, Scandinavian Modelling and Simulation Society 50, conference in Fredrice, Denmark, October 7-8 (2009)</em>. - Fredrice : SIMS electronic.
- Conference paper (peer-reviewed)
Abstract
Subject headings
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- A dynamic model is developed for a continuous pulping digester to characterize the channeling phenomenon. The commercial CFD codes, FLUENT, are used to compute the hydraulic behavior of the digester under the normal and particular operational conditions. All the circulation flows, extractions, multiple inlets and outlets are included in this model. The digester is designed in the Gambit and an axisymmetric 2d model is applied. A porous scheme is implemented in the model in order to design the fluid flow and channelling phenomenon inside the digester. A heterogeneous porous media is specified in order to take the compression of the pulp into account. The simulation can serves as a prognosis model to predict the risk situations and probably to hinder high economical damage. The k- model contributes to compute the flow “regimes” or eventual eddies in some turbulent zones of the digester.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Pappers-, massa- och fiberteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Paper, Pulp and Fiber Technology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
Keyword
- CFD
- channeling
- porous media
- turbulent
- Cellulose and paper engineering
- Cellulosa- och pappersteknik
- Fluid mechanics
- Strömningsmekanik
- Energy- and Environmental Engineering
- energi- och miljöteknik
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- ref (subject category)
- kon (subject category)
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