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Direct numerical simulations of axially rotating turbulent pipe flow up to Reτ = 1000

Yang L, Yao J, Schlatter P, Hussain F (2026)

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Publication Type: Conference contribution

Publication year: 2026

Journal

Publisher: Institute of Physics

Book Volume: 3173

Conference Proceedings Title: Journal of Physics: Conference Series

Event location: Bertinoro, ITA

DOI: 10.1088/1742-6596/3173/1/012012

Abstract

Direct numerical simulations of axially rotating turbulent pipe flows are conducted for friction Reynolds numbers Reτ up to 1000 and rotation numbers N = 0-4.0. A non-monotonic trend in friction factor λ is observed at low Reτ, while at higher Reτ cases, λ decreases consistently with increasing rotation. New scaling laws and defect laws are proposed for the centerline velocity and mean streamwise velocity, demonstrating improved collapse over existing literature correlations. Rotation modifies the Reynolds stress distribution by suppressing near-wall turbulence while enhancing axial fluctuations in the pipe core. Spectral analysis reveals the emergence of very large-scale motions under rotation, accompanied by an increase in energy at low wavenumbers in both the streamwise and azimuthal directions. These findings highlight the role of rotation in modulating pipe flow turbulence.

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How to cite

APA:

Yang, L., Yao, J., Schlatter, P., & Hussain, F. (2026). Direct numerical simulations of axially rotating turbulent pipe flow up to Reτ = 1000. In Journal of Physics: Conference Series. Bertinoro, ITA: Institute of Physics.

MLA:

Yang, Lei, et al. "Direct numerical simulations of axially rotating turbulent pipe flow up to Reτ = 1000." Proceedings of the 11th iTi Conference on Turbulence 2025, iTi 2025, Bertinoro, ITA Institute of Physics, 2026.

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