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Measurements and Prediction of Laminar-Turbulent Transition at High Free-Stream Turbulence and Pressure Gradients

Valery Chernoray (Institutionen för tillämpad mekanik, Strömningslära) ; Bercelay M. Niebles Atencio ; Mohsen Jahanmiri
ICAS 2012, 28th International Congress of the Aeronautical Sciences (2012)
[Konferensbidrag, övrigt]

This paper is focused on measurements and prediction of laminar-turbulent transition at high free-stream turbulence in boundary layers of airfoil geometries with external pressure gradient changeover. Experimental and numerical study is performed for a number of flow cases covering a range of flow Reynolds numbers, turbulence intensities and pressure gradient distributions. The flow parameters in experiments and computations are typical for turbomachinery applications and main motivation of current study is validation of transition models which can be used for transition prediction in such engineering applications. In current work the experimental data are used to validate a transition model by Langtry and Menter which showed good agreement with experiments for all test cases.



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Denna post skapades 2012-08-14. Senast ändrad 2017-09-14.
CPL Pubid: 161557

 

Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Strömningslära (2005-2017)

Ämnesområden

Energi
Transport
Hållbar utveckling
Maskinteknik
Rymd- och flygteknik
Strömningsmekanik

Chalmers infrastruktur