A direct comparison of pulsatile and non-pulsatile rough-wall turbulent pipe flow
TO Jelly, RC Chin, SJ Illingworth, JP Monty, I Marusic, A Ooi
Journal of Fluid Mechanics | Cambridge University Press (CUP) | Published : 2020
Pulsatile rough-wall turbulent pipe flow is compared against its non-pulsatile counterpart using data obtained from direct numerical simulation. Results are presented at a mean friction Reynolds number of 540 for a set of three geometrically scaled roughness topographies at a single forcing condition, which, based on existing classifications, falls into the current-dominated very-high-frequency regime. By comparing the pulsatile data against an equivalent non-pulsatile dataset (Chan et al., J. Fluid Mech., vol. 854, 2018, pp. 5–33), the key differences (and similarities) between the forced and unforced configurations are identified. A major finding of this study is that the flow in the outer..View full abstract
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Awarded by Australian Research Council
The financial support of the Australian Research Council (ARC) is gratefully acknowledged. This work was supported by the ARC Linkage Project (LP150100233) and was undertaken with the resources and services from the National Computational Infrastructure, which is supported by the Australian Government.