Mixing Study in an Unbaffled Stirred Precipitator Using LES Modelling
This paper describes the CFD modelling of a reactor operating in the nuclear industry using LES approach. The reactor consists of an unbaffled stirred tank reactor in which plutonium precipitation reactions are carried out. The flow generated in such a precipitator is complex and there is very littl...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Chemical Engineering |
| Online Access: | http://dx.doi.org/10.1155/2012/450491 |
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| _version_ | 1849397336549097472 |
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| author | Murielle Bertrand Delphine Parmentier Olivier Lebaigue Edouard Plasari Frédéric Ducros |
| author_facet | Murielle Bertrand Delphine Parmentier Olivier Lebaigue Edouard Plasari Frédéric Ducros |
| author_sort | Murielle Bertrand |
| collection | DOAJ |
| description | This paper describes the CFD modelling of a reactor operating in the nuclear industry using LES approach. The reactor consists of an unbaffled stirred tank reactor in which plutonium precipitation reactions are carried out. The flow generated in such a precipitator is complex and there is very little information available in the literature about unbaffled reactors stirred with magnetic rod. That is why a hydrodynamic modelling has been developed using computational fluid dynamics (CFD) in order to get accurate description of mixing phenomena inside the precipitator and therefore to be able to predict the solid particle properties. Due to the strong turbulence anisotropy, the turbulence transport simulation is achieved by a large eddy simulation (LES) approach which gives unsteady solutions. The numerical simulations are performed in 3D using the Trio_U code developed at the Commissariat à l'Énergie Atomique. The predictive performances of the modelling are analysed through a mixing phenomena study. Both experimental and numerical studies are performed. This work shows how hydrodynamics inside the reactor can have a noticeable effect on the precipitate properties and how LES modelling is a very effective tool for the process control. |
| format | Article |
| id | doaj-art-ae58ac8a75cf4a22a0b59027c4416307 |
| institution | Kabale University |
| issn | 1687-806X 1687-8078 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Chemical Engineering |
| spelling | doaj-art-ae58ac8a75cf4a22a0b59027c44163072025-08-20T03:39:04ZengWileyInternational Journal of Chemical Engineering1687-806X1687-80782012-01-01201210.1155/2012/450491450491Mixing Study in an Unbaffled Stirred Precipitator Using LES ModellingMurielle Bertrand0Delphine Parmentier1Olivier Lebaigue2Edouard Plasari3Frédéric Ducros4Nuclear Energy Division, Radiochemistry and Processes Department, French Alternative Energies and Atomic Energy Commission, 30207 Bagnols sur Ceze, FranceNuclear Energy Division, Radiochemistry and Processes Department, French Alternative Energies and Atomic Energy Commission, 30207 Bagnols sur Ceze, FranceNuclear Energy Division, Reactor Studies Department, French Alternative Energies and Atomic Energy Commission, 34054 Grenoble, FranceReactions and Process Engineering Laboratory, CNRS, 54001 Nancy, FranceNuclear Energy Division, Reactor Studies Department, French Alternative Energies and Atomic Energy Commission, 34054 Grenoble, FranceThis paper describes the CFD modelling of a reactor operating in the nuclear industry using LES approach. The reactor consists of an unbaffled stirred tank reactor in which plutonium precipitation reactions are carried out. The flow generated in such a precipitator is complex and there is very little information available in the literature about unbaffled reactors stirred with magnetic rod. That is why a hydrodynamic modelling has been developed using computational fluid dynamics (CFD) in order to get accurate description of mixing phenomena inside the precipitator and therefore to be able to predict the solid particle properties. Due to the strong turbulence anisotropy, the turbulence transport simulation is achieved by a large eddy simulation (LES) approach which gives unsteady solutions. The numerical simulations are performed in 3D using the Trio_U code developed at the Commissariat à l'Énergie Atomique. The predictive performances of the modelling are analysed through a mixing phenomena study. Both experimental and numerical studies are performed. This work shows how hydrodynamics inside the reactor can have a noticeable effect on the precipitate properties and how LES modelling is a very effective tool for the process control.http://dx.doi.org/10.1155/2012/450491 |
| spellingShingle | Murielle Bertrand Delphine Parmentier Olivier Lebaigue Edouard Plasari Frédéric Ducros Mixing Study in an Unbaffled Stirred Precipitator Using LES Modelling International Journal of Chemical Engineering |
| title | Mixing Study in an Unbaffled Stirred Precipitator Using LES Modelling |
| title_full | Mixing Study in an Unbaffled Stirred Precipitator Using LES Modelling |
| title_fullStr | Mixing Study in an Unbaffled Stirred Precipitator Using LES Modelling |
| title_full_unstemmed | Mixing Study in an Unbaffled Stirred Precipitator Using LES Modelling |
| title_short | Mixing Study in an Unbaffled Stirred Precipitator Using LES Modelling |
| title_sort | mixing study in an unbaffled stirred precipitator using les modelling |
| url | http://dx.doi.org/10.1155/2012/450491 |
| work_keys_str_mv | AT muriellebertrand mixingstudyinanunbaffledstirredprecipitatorusinglesmodelling AT delphineparmentier mixingstudyinanunbaffledstirredprecipitatorusinglesmodelling AT olivierlebaigue mixingstudyinanunbaffledstirredprecipitatorusinglesmodelling AT edouardplasari mixingstudyinanunbaffledstirredprecipitatorusinglesmodelling AT fredericducros mixingstudyinanunbaffledstirredprecipitatorusinglesmodelling |