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Numerical and experimental verification of initial, transitional and turbulent regions of free turbulent round jet
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering. Division of Energy Systems, Department of Management and Engineering, Linköping University.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering. Division of Energy Systems, Department of Management and Engineering, Linköping University.ORCID iD: 0000-0003-3472-4210
2011 (English)In: 20th AIAA Computational Fluid Dynamics Conference 2011, 2011Conference paper, Published paper (Refereed)
Abstract [en]

Three-dimensional simulation of the whole domain (initial, transition and fully developed regions) of round jet is essential in order to predict and to study the flow behavior of multiple jets (e.g. confluent jets). According to authors knowledge, numerical prediction of round jet with RANS models that has been presented by other researchers, are only in two-dimensional (axisymmetric) and mostly for the fully developed region. The inlet boundary conditions,  inlet velocity profile, turbulent kinetic energy and its dissipation rate at the diffuser exit has been governed from an earlier verified numerical simulation. In the present paper, results of three-dimensional modeling of isothermal, free, turbulent round jet with two two-equation (Low Re  and SST ), a transition three-equation ( ) and a transition four-equation (SST) eddy-viscosity turbulence models with resolved inlet profiles are compared and validated with hot-wire anemometry. This study shows that numerical simulation of round jet with SST  gives good agreement with measured mean longitudinal velocities, while transition models could only predict the initial region of round jet.

Place, publisher, year, edition, pages
2011.
National Category
Energy Engineering Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:hig:diva-11017Scopus ID: 2-s2.0-84995268973OAI: oai:DiVA.org:hig-11017DiVA: diva2:463162
Conference
20th AIAA Computational Fluid Dynamics Conference, 27 - 30 June 2011, Honolulu, Hawaii
Note

Programpunkt AIAA 2011-3697

Available from: 2011-12-16 Created: 2011-12-08 Last updated: 2017-04-10Bibliographically approved

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Round Jet(1211 kB)3405 downloads
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