Archivio Istituzionale della RicercaThe turbulent boundary layer over a wall roughened by pyramidal elements was the subject of experimental studies at the Aeronautical Laboratory of the Politecnico di Torino. Previous studies on the subject are reported in Di Cicca et al. (2014), Di Cicca and Onorato (2016) and Di Cicca et al. (2018). PIV measurements at relatively low Reynolds numbers were carried out in a closed-loop water tunnel. The ratio between the boundary layer thickness and the pyramidal roughness height is δ/k=17.2 . The results point out the influence of the roughness on the flow in terms of mean and fluctuating quantities and turbulence scales.
Turbulent boundary layer over a wall roughened by pyramidal elements / DI CICCA, GAETANO MARIA; Onorato, Michele. - ELETTRONICO. - (2018). (Intervento presentato al convegno 5th International Conference on Experimental Fluid Mechanics (ICEFM-2018) tenutosi a Munich - Germany nel 2 - 4 July 2018).
Turbulent boundary layer over a wall roughened by pyramidal elements
Gaetano M Di Cicca;Michele Onorato
2018
Abstract
The turbulent boundary layer over a wall roughened by pyramidal elements was the subject of experimental studies at the Aeronautical Laboratory of the Politecnico di Torino. Previous studies on the subject are reported in Di Cicca et al. (2014), Di Cicca and Onorato (2016) and Di Cicca et al. (2018). PIV measurements at relatively low Reynolds numbers were carried out in a closed-loop water tunnel. The ratio between the boundary layer thickness and the pyramidal roughness height is δ/k=17.2 . The results point out the influence of the roughness on the flow in terms of mean and fluctuating quantities and turbulence scales.
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https://hdl.handle.net/11583/2726617
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