Nature of laminar-turbulence intermittency in shear flows

M. Avila, B. Hof, Physical Review E 87 (2013).


Journal Article | Published | English
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Abstract
In pipe, channel, and boundary layer flows turbulence first occurs intermittently in space and time: at moderate Reynolds numbers domains of disordered turbulent motion are separated by quiescent laminar regions. Based on direct numerical simulations of pipe flow we argue here that the spatial intermittency has its origin in a nearest neighbor interaction between turbulent regions. We further show that in this regime turbulent flows are intrinsically intermittent with a well-defined equilibrium turbulent fraction but without ever assuming a steady pattern. This transition scenario is analogous to that found in simple models such as coupled map lattices. The scaling observed implies that laminar intermissions of the turbulent flow will persist to arbitrarily large Reynolds numbers.
Publishing Year
Date Published
2013-06-18
Journal Title
Physical Review E
Volume
87
Issue
6
Article Number
063012
IST-REx-ID

Cite this

Avila M, Hof B. Nature of laminar-turbulence intermittency in shear flows. Physical Review E. 2013;87(6). doi:10.1103/PhysRevE.87.063012
Avila, M., & Hof, B. (2013). Nature of laminar-turbulence intermittency in shear flows. Physical Review E, 87(6). https://doi.org/10.1103/PhysRevE.87.063012
Avila, Marc, and Björn Hof. “Nature of Laminar-Turbulence Intermittency in Shear Flows.” Physical Review E 87, no. 6 (2013). https://doi.org/10.1103/PhysRevE.87.063012.
M. Avila and B. Hof, “Nature of laminar-turbulence intermittency in shear flows,” Physical Review E, vol. 87, no. 6, 2013.
Avila M, Hof B. 2013. Nature of laminar-turbulence intermittency in shear flows. Physical Review E. 87(6), 063012.
Avila, Marc, and Björn Hof. “Nature of Laminar-Turbulence Intermittency in Shear Flows.” Physical Review E, vol. 87, no. 6, 063012, American Institute of Physics, 2013, doi:10.1103/PhysRevE.87.063012.

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