Intermittency and Local Dissipation Scales under Strong Mean Shear

Author

Khandakar Niaz Morshed
Subhas Karan Venayagamoorthy, Missouri University of Science and TechnologyFollow
Lakshmi Prasad Dasi

Abstract

We experimentally probe the local dissipation scale distribution Q(η) and temporal fluctuations of the turbulent kinetic energy dissipation rate ε in the strongly anisotropic flow past a backward facing step. A shift in Q(η) and corresponding reduction in the relative intermittency of ε is observed with increasing mean shear S. We offer physical arguments to elucidate the role of strong shear on the small-scale structure. A local mean-shear dissipation Reynolds number, ReS ≡ {ε}/(S²ν), is proposed that may define a family of universal small-scale structures of turbulence. © 2013 American Institute of Physics.

Recommended Citation

K. N. Morshed et al., "Intermittency and Local Dissipation Scales under Strong Mean Shear," Physics of Fluids, vol. 25, no. 1, article no. 011701, American Institute of Physics, Jan 2013.

The definitive version is available at https://doi.org/10.1063/1.4774039

Department(s)

Civil, Architectural and Environmental Engineering

Publication Status

Available Access

International Standard Serial Number (ISSN)

1070-6631

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2025 American Institute of Physics, All rights reserved.

Publication Date

02 Jan 2013