Self-similarity and helical symmetry in vortex generator flow simulations

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2012

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According to experimental observations, the vortices generated by vortex generators have previously been observed to be self-similar for both the axial (uz) and azimuthal (u) velocity profiles. Further, the measured vortices have been observed to obey the criteria for helical symmetry. This is a powerful result, since it reduces the highly complex flow to merely four parameters. In the present work, corresponding computer simulations using Reynolds-Averaged Navier-Stokes equations have been carried out and compared to the experimental observations. The main objective of this study is to investigate how well the simulations can reproduce the physics of the flow and if the same analytical model can be applied. Using this model, parametric studies can be significantly reduced and, further, reliable simulations can substantially reduce the costs of the parametric studies themselves.
Original languageEnglish
Title of host publicationProceedings of Torque 2012, The science of making torque from wind
Number of pages10
Publication date2012
StatePublished

Conference

ConferenceThe science of Making Torque from Wind 2012
CountryGermany
CityOldenburg
Period09/10/1211/10/12
Internet addresshttp://www.forwind.de/makingtorque/Home.html
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