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Development of a CFD Model for a Rotating Bed Reactor in Large Volumes
Umeå University, Faculty of Science and Technology, Department of Physics.
2017 (English)Independent thesis Advanced level (degree of Master (Two Years)), 300 HE creditsStudent thesis
Abstract [sv]

Den roterande bäddreaktornSpinChem® RBR S2 kan fyllas med solida partiklar och sänkas ned och roteras ien vätska. Detta gör att kemiska reaktioner mellan vätskan och partiklarna iRBR:en kan äga rum.Flödet från en RBR S2 i en 76 dm3 stor vattentank undersöktes med hjälp avsimuleringar i ANSYS Fluent 18.0. Den tid som krävdes för ett färgämne attsprida sig jämnt i vattentanken på grund av flödet från RBR:en mättes i ettexperiment och jämfördes med motsvarande simuleringar. Mixningstiderna frånexperimentet visade att det krävdes i genomsnitt 161 s för färgämnet att blijämnt fördelat, medan simuleringarna överskattade denna tid med ungefär 89 %.En simuleringsmodell för att avgöra hur mycket av en vätska som varit i kontaktmed partiklarna i RBR:en efter en given tid togs fram och testades.Simuleringarna visade att ungefär 8660 s krävdes för att 95 % av vätskan ivattentanken skulle ha varit i kontakt med partiklarna. Denna tid verifieradesdock inte med experiment.

Abstract [en]

The rotating bed reactorSpinChem® RBR S2 can be filled with solid particles and submerged into a liquidwhere it is rotated, which allows for chemical reactions to occur between theliquid and the particles.The flow in a 76 dm3 large tank of water due to the rotating RBR S2 wasinvestigated using simulations performed in ANSYS Fluent 18.0. The timerequired for a colouring agent to become uniformly mixed in the tank due to theflow from the device was measured in a practical experiment and was compared tosimulations. The mixing times obtained in the practical experiment were onaverage approximately 161 s, whereas the times obtained in the simulationoverpredicted this with approximately 89 %.A simulation model for determining how much of a liquid has been in contactwith the particles in the RBR after a given amount of time was suggested andtested. The simulation results showed that approximately 8660 s was requriedfor 95 % of the liquid to be in contact with the porous bed, although this timewas not verified experimentally.

Place, publisher, year, edition, pages
2017. , p. 68
Keywords [en]
computational fluid dynamics, fluid mechanics, cfd
National Category
Other Physics Topics
Identifiers
URN: urn:nbn:se:umu:diva-136101OAI: oai:DiVA.org:umu-136101DiVA, id: diva2:1109147
External cooperation
SpinChem AB
Subject / course
Examensarbete i teknisk fysik
Educational program
Master of Science Programme in Engineering Physics
Supervisors
Examiners
Available from: 2017-06-13 Created: 2017-06-13 Last updated: 2018-01-24Bibliographically approved

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Development of a CFD Model for a Rotating Bed Reactor in Large Volumes(19608 kB)108 downloads
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CiteExportLink to record
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