Journal article

On scaling pipe flows with sinusoidal transversely corrugated walls: analysis of data from the laminar to the low-Reynolds-number turbulent regime

S Saha, JC Klewicki, A Ooi, HM Blackburn

Journal of Fluid Mechanics | CAMBRIDGE UNIV PRESS | Published : 2015

Abstract

Direct numerical simulation was used to study laminar and turbulent flows in circular pipes with smoothly corrugated walls. The corrugation wavelength was kept constant at 0.419D, where D is the mean diameter of the wavy-wall pipe and the corrugation height was varied from zero to 0.08D. Flow rates were varied in steps between low values that generate laminar flow and higher values where the flow is in the post-transitional turbulent regime. Simulations in the turbulent regime were also carried out at a constant Reynolds number, Reτ = 314, for all corrugation heights. It was found that even in the laminar regime, larger-amplitude corrugations produce flow separation. This leads to the propor..

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Grants

Awarded by Victorian Life Sciences Computation Initiative (VLSCI)


Awarded by National Computational Infrastructure's Merit Allocation Scheme


Awarded by Australian Research Council


Funding Acknowledgements

The authors acknowledge the support provided by a Victorian Life Sciences Computation Initiative (VLSCI) grant number VR0210 on its Peak Computing Facility at the University of Melbourne, an initiative of the Victorian Government, Australia. The work was also supported by iVEC through the use of advanced computing resources located at iVEC@Murdoch and by the National Computational Infrastructure's Merit Allocation Scheme Grant D77. This work was financially supported by the Australian Research Council (grant nos DP120101467, DP130103103, DP130101307).