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Updated: Mar 25, 2026

The Diffusion of Passive Tracers in Laminar Shear Flow
Published on: May 1, 2018
Anomalous dissipation and kinetic-energy distribution in pipes at very high Reynolds numbers
Xi Chen1,2, Bo-Bo Wei1, Fazle Hussain1,2
1State Key Laboratory for Turbulence and Complex Systems and Department of Mechanics, College of Engineering, Peking University, Beijing 100871, China.
Abstract:
A symmetry-based theory is developed for the description of (streamwise) kinetic energy K in turbulent pipes at extremely high Reynolds numbers (Re's). The theory assumes a mesolayer with continual deformation of wall-attached eddies which introduce an anomalous dissipation, breaking the exact balance between production and dissipation. An outer peak of K is predicted above a critical Re of 10^{4}, in good agreement with experimental data. The theory offers an alternative explanation for the recently discovered logarithmic distribution of K. The concept of anomalous dissipation is further supported by a significant modification of the k-ω equation, yielding an accurate prediction of the entire K profile.
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