Turbulence Production in the Low Polymer Drag Reduction Regime
John Elsnab, Christopher White, Joseph Klewicki, Ramis Örlü, Alessandro Talamelli, Joachim Peinke, Martin Oberlack
Springer Proceedings in Physics | Springer Nature | Published : 2019
Streamwise velocity profiles and their wall-normal derivatives were used to investigate the properties of turbulent channel flow in the low polymer drag reduction (DR) regime, DR=6.5 – 26%. Streamwise velocity data were obtained over a friction Reynolds number ranging from 650 to 1800 using the single velocity component version of molecular tagging velocimetry (1c-MTV). This adaptation of the MTV technique has the ability to accurately capture instantaneous profiles at very high spatial resolution, and thus generate well-resolved derivative information as well. Owing to this ability, the present study is able to build upon and extend the recent numerical simulation analysis of White et al. ..View full abstract
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Awarded by Australian Research Council
This study was supported by Australian Research Council grant numbers DP120101467 and LE130100088.