Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.11790/1621
DC FieldValueLanguage
dc.contributor.authorSchittl, Floriande_at
dc.date.accessioned2021-10-18T13:31:53Z-
dc.date.available2021-10-18T13:31:53Z-
dc.date.issued2021-
dc.identifier.citationIn: Pannonia Research Award 2020, 41-53de_at
dc.identifier.isbn978-3-7011-0482-6-
dc.identifier.urihttp://hdl.handle.net/20.500.11790/1621-
dc.descriptionScience.Research.Pannonia. 25de_at
dc.description.abstractEnergy conversion based on the interaction of acoustic fluctuations in thermal and viscous boundary layers offers a promising possibility for reducing fossil energy resources. Machines based on this so-called thermoacoustic effect can be used as heat engines as well as heat pumps or refrigerators. However, the problem with the implementation of such systems is the insufficient understanding of the various phenomena (e. g. turbulence) of thermally excited flows. Numerical methods, such as CFD, are established for the optimization and further development of thermoacoustic systems due to increasing computational capacities. The foundation for optimizations is a reliable and realistic prediction of the flow and heat transfer process in thermoacoustic systems. Therefore, in this study, different approaches based on the RANS equations are investigated with the use of the CFD code ANSYS Fluent®. In addition to two standard eddy-viscosity models, two model extensions are implemented in the CFD code. Extensive measurement data based on time-resolved laser-assisted flow measurements are used for the validation of the investigated turbulence models. As the studies show, the standard eddy-viscosity models provide a good prediction of the velocity and temperature profiles. However, it can be pointed out that both the elliptic relaxation model (V2F) and the local formulation of the Transition SST model bring an improvement, especially in the interpretation of non-linear effects.de_at
dc.description.sponsorshipForschung Burgenlandde_at
dc.language.isoende_at
dc.publisherLeykamde_at
dc.relation.ispartofPannonia Research Award 2020de_at
dc.titleNumerical investigation of velocity and temperature distributions in thermoacoustic stacksde_at
dc.typeBuchbeitragde_at
item.grantfulltextnone-
item.fulltextNo Fulltext-
item.languageiso639-1en-
item.openairetypeBuchbeitrag-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
crisitem.author.deptForschung Burgenland-
crisitem.author.orcid0000-0002-3122-2066-
crisitem.author.parentorgFH Burgenland-
Appears in Collections:Schwerpunkt Energie & Umwelt
SFX Query Show simple item record

Page view(s)

74
Last Week
7
Last month
13
checked on Jan 18, 2022

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.