Journal article
Influence of a Large-Eddy-Breakup-Device on the Turbulent Interface of Boundary Layers
C Chin, R Örlü, P Schlatter, J Monty, N Hutchins
Flow Turbulence and Combustion | SPRINGER | Published : 2017
Abstract
The effects of implementing a large-eddy break-up device (LEBU) in a turbulent boundary layer on the interaction with the boundary layer is investigated with particular emphasis on the turbulent/non-turbulent interface (TNTI). The simulation data is taken from a recent well-resolved large eddy simulation (Chin et al. Flow Turb. Combust. 98, 445–460 2017), where the LEBU was implemented at a wall-normal distance of 0.8 δ (local boundary layer thickness) from the wall. A comparison of the TNTI statistics is performed between a zero-pressure-gradient boundary layer with and without the LEBU. The LEBU is found to delay the growth of the turbulent boundary layer and also attenuates the fluctuatio..
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Funding Acknowledgements
This research was undertaken with the assistance of resources provided at the NCI NF through the National Computational Merit Allocation Scheme supported by the Australian Government. Computer time was also provided by SNIC (Swedish National Infrastructure for Computing). The authors also acknowledge the financial support of the Australian Research Council as well as the Lundeqvist foundation. Financial support was also provided by the Wallenberg foundation via the Wallenberg Academy Fellow programme.