Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Double scaling and intermittency in shear dominated flows.

C M Casciola1, R Benzi, P Gualtieri

  • 1Dipartimento Meccanica e Aeronautica, Università di Roma "La Sapienza," Via Eudossiana 18, 00184, Roma, Italy.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|January 22, 2002
PubMed
Summary

Intermittency in shear flows differs from isotropic turbulence due to Reynolds stresses. A new similarity law explains this, showing shear turbulence properties are fixed by the dissipation field.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Complex transition pathways in boiling and cavitation.

Journal of fluid mechanics·2025
Same author

Dyslipidemia and heart failure: current evidence and perspectives of use of statins.

European review for medical and pharmacological sciences·2024
Same author

Lynch syndrome-associated endometrial cancer patient with a rare novel germline likely pathogenic variant of MSH2 gene: A case report.

Gynecologic oncology reports·2023
Same author

Role of nutrients in modulating microbiota and immunity in COVID-19 disease.

European review for medical and pharmacological sciences·2023
Same author

The role of MTHFR polymorphisms in the risk of lipedema.

European review for medical and pharmacological sciences·2023
Same author

Locomotion performance for oscillatory swimming in free mode.

Bioinspiration & biomimetics·2022

Area of Science:

  • Fluid Dynamics
  • Turbulence Research
  • Statistical Mechanics

Background:

  • Intermittency in turbulent flows is influenced by energy transfer, which is altered in shear-dominated conditions by Reynolds stresses.
  • Homogeneous and isotropic turbulence models do not fully capture the complexities of shear flows.
  • A refined similarity law is proposed to address the heightened intermittency observed in these flows.

Purpose of the Study:

  • To investigate the distinct nature of intermittency in shear-dominated flows compared to homogeneous and isotropic conditions.
  • To provide evidence for the coexistence of distinct inertial and shear-dominated ranges.
  • To theoretically predict scaling exponents in shear flows using insights from isotropic turbulence.

Main Methods:

  • Analysis of turbulent kinetic energy production and Reynolds stresses.

Related Experiment Videos

  • Application of a refined similarity law for intermittency.
  • Comparison of theoretical predictions with numerical and experimental data.
  • Examination of dissipation field properties and their influence on turbulent fluctuations.

    • Main Results:

    • Evidence supporting the coexistence of Kolmogorov-like inertial and shear-dominated ranges.
    • Demonstration that statistical properties of the dissipation field are largely insensitive to mean shear.
    • Accurate theoretical prediction of scaling exponents in the shear-dominated range.
    • Observation of universality in larger anisotropic scales of shear turbulence.

    Conclusions:

    • The study confirms the coexistence of two distinct regimes in shear flows.
    • The dissipation field's statistical properties are robust against mean shear, enabling predictions.
    • Larger anisotropic scales in shear turbulence exhibit universality, linking dissipation to fluctuation properties.