Effects of roughness on non-equilibrium turbulent boundary layers

Ralph J Volino; Daniel Fritsch; William J Devenport; Luis Eca; Ricardo Garcia-Mayoral; Beverley Mckeon; Ugo Piomelli; Daniel Chung; Vidya Vishwanathan; Maarten Kerkvliet; Serge Toxopeus; Nicholas Hutchins

Journal article

Effects of roughness on non-equilibrium turbulent boundary layers

Ralph J Volino, Daniel Fritsch, William J Devenport, Luis Eca, Ricardo Garcia-Mayoral, Beverley Mckeon, Ugo Piomelli, Daniel Chung, Vidya Vishwanathan, Maarten Kerkvliet, Serge Toxopeus, Nicholas Hutchins

Journal of Turbulence | Taylor and Francis Group | Published : 2024

DOI: 10.1080/14685248.2024.2360186

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Abstract

The effects of roughness were considered as part of a NATO Advanced Vehicle Technology effort titled ‘Non-Equilibrium Turbulent Boundary Layers at High Reynolds Numbers’ (NATO AVT-349). This paper comments on the current state of understanding of the flow physics and modelling efforts to predict rough-wall boundary layer behaviour. Outer layer similarity to smooth wall flows and Reynolds number effects are discussed for zero, favourable, and adverse pressure gradients based on the results of experiments and numerical simulations. Various types of modelling are considered including Reynolds averaged Navier-Stokes (RANS) models with different roughness and turbulence models, wall-modelled larg..

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University of Melbourne Researchers

Daniel Chung Author

Nicholas Hutchins Author

Related Projects (1)

Advancing the flow physics behind the drag of riblets

Grants

Awarded by ONR

Awarded by EPSRC-UK

Awarded by AFOSR (EOARD)

Awarded by AFOSR (AOARD)

Awarded by AFOSR

Funding Acknowledgements

William Devenport would like to acknowledge the support of ONR, in particular Peter Chang, Ki-Han Kim and YinLu Young for their support under grants N00014-18-1-2455, N00014-19-1-2109 and N00014-20-1-2821. Ugo Piomelliacknowledges the support of the Natural Sciences and Engineering Research Council of Canada (NSERC-CRSNG), underthe Discovery Grant program. Ralph Volino acknowledges the support of ONR under grant N0001424WX00257 moni-tored by Peter Chang. Ricardo Garcia-Mayoral acknowledges the support of EPSRC-UK under grant EP/S013083/1 and AFOSR (EOARD) under grant FA8655-22-1-7062. Daniel Chung and Nicholas Hutchins acknowledge support from the ARC and from the AFOSR (AOARD) under grant FA2386-21-1-4018. Beverley McKeon acknowledges support from AFOSR under grant FA9550-21-1-0443 (PM Greg Abate) and ONR grant N00014-17-1-3022.