Influence of impeller type on the flow and mixing in a stirred reactor
(2000) In AIChE Journal 46(12). p.2373-2382- Abstract
- Large eddy simulations (LES) of a stirred reactor with a liquid volume of 0.64 m3 were performed. The tank was stirred by either two standard Rushton impellers or two Scaba 6SRGT impellers. The LES can provide details of the flow field that cannot be obtained with so‐called Reynolds‐averaged equations and the corresponding models. The unsteady spatially filtered incompressible Navier‐Stokes equations were solved together with a transport equation for the concentration of an inert additive using a multigrid finite difference code with a staggered grid. The unresolved turbulent scales were modeled using a scale similarity model. The aim of this investigation has been to study the influence of impeller type on the flow structure and scalar... (More)
- Large eddy simulations (LES) of a stirred reactor with a liquid volume of 0.64 m3 were performed. The tank was stirred by either two standard Rushton impellers or two Scaba 6SRGT impellers. The LES can provide details of the flow field that cannot be obtained with so‐called Reynolds‐averaged equations and the corresponding models. The unsteady spatially filtered incompressible Navier‐Stokes equations were solved together with a transport equation for the concentration of an inert additive using a multigrid finite difference code with a staggered grid. The unresolved turbulent scales were modeled using a scale similarity model. The aim of this investigation has been to study the influence of impeller type on the flow structure and scalar transport. The results show that, compared at equal power input, the center plane velocities and the volume flow in the impeller stream do not differ much for the impeller types. Also, for the 6SRGT the periodic fluctuations associated with the blade passing is less pronounced (Less)
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https://lup.lub.lu.se/record/2c9f7c1b-58a1-4097-8ab1-5f1b79989657
- author
- Revstedt, Johan LU ; Fuchs, Laszlo LU ; Kovács, Tamás LU and Trägårdh, Christian LU
- organization
- publishing date
- 2000
- type
- Contribution to journal
- publication status
- published
- subject
- in
- AIChE Journal
- volume
- 46
- issue
- 12
- pages
- 5 pages
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- scopus:0034523004
- ISSN
- 1547-5905
- DOI
- 10.1002/aic.690461206
- language
- English
- LU publication?
- yes
- id
- 2c9f7c1b-58a1-4097-8ab1-5f1b79989657
- date added to LUP
- 2019-04-30 19:29:35
- date last changed
- 2023-09-08 22:51:47
@article{2c9f7c1b-58a1-4097-8ab1-5f1b79989657, abstract = {{Large eddy simulations (LES) of a stirred reactor with a liquid volume of 0.64 m3 were performed. The tank was stirred by either two standard Rushton impellers or two Scaba 6SRGT impellers. The LES can provide details of the flow field that cannot be obtained with so‐called Reynolds‐averaged equations and the corresponding models. The unsteady spatially filtered incompressible Navier‐Stokes equations were solved together with a transport equation for the concentration of an inert additive using a multigrid finite difference code with a staggered grid. The unresolved turbulent scales were modeled using a scale similarity model. The aim of this investigation has been to study the influence of impeller type on the flow structure and scalar transport. The results show that, compared at equal power input, the center plane velocities and the volume flow in the impeller stream do not differ much for the impeller types. Also, for the 6SRGT the periodic fluctuations associated with the blade passing is less pronounced}}, author = {{Revstedt, Johan and Fuchs, Laszlo and Kovács, Tamás and Trägårdh, Christian}}, issn = {{1547-5905}}, language = {{eng}}, number = {{12}}, pages = {{2373--2382}}, publisher = {{John Wiley & Sons Inc.}}, series = {{AIChE Journal}}, title = {{Influence of impeller type on the flow and mixing in a stirred reactor}}, url = {{http://dx.doi.org/10.1002/aic.690461206}}, doi = {{10.1002/aic.690461206}}, volume = {{46}}, year = {{2000}}, }