Abstract
Results from the first experimental campaign in the Long Pipe facility of the CICLoPE laboratory are reported. Single hot-wire profile measurements are presented, taken from the wall up to one third of the pipe radius, with the friction Reynolds number \(Re_{\tau }\) ranging from \( 6.5 \times 10^3\) up to \( 3.8 \times 10^4\). Measurements of the pressure drop along the pipe are presented together with an estimation of its uncertainty. Mean and variance of the streamwise velocity fluctuations are examined and compared with the findings from other facilities. The amplitude of the inner-scaled near-wall peak of the variance, after being corrected for spatial resolution effects, shows an increasing trend with Reynolds number, in accordance with low Reynolds number experiments and simulations.
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Acknowledgements
Financially supported through the European High-Performance Infrastructures in Turbulence (EuHIT) within the Reynolds stress tensor scaling in turbulent pipe flow (Re-Scale) project.
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Fiorini, T., Bellani, G., Örlü, R., Segalini, A., Alfredsson, P.H., Talamelli, A. (2017). Turbulent Pipe Flow Near-Wall Statistics. In: Örlü, R., Talamelli, A., Oberlack, M., Peinke, J. (eds) Progress in Turbulence VII. Springer Proceedings in Physics, vol 196. Springer, Cham. https://doi.org/10.1007/978-3-319-57934-4_13
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DOI: https://doi.org/10.1007/978-3-319-57934-4_13
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