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

Time-modulated convection with zero mean temperature gradient.

A C Or1, R E Kelly

  • 1Department of Mechanical and Aerospace Engineering, University of California at Los Angeles, Los Angeles, California 90095-1597, USA.

Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
|April 24, 2002
PubMed
Summary
This summary is machine-generated.

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

Elephants, bushes, hot porridge… and clinical intuition?

Nordic journal of psychiatry·2023
Same author

The Role the Frailty Syndrome Can Play in Advocacy and Resource Allocation for Our Ageing Population - Findings in a Dublin Day Hospital.

The Journal of frailty & aging·2016
Same author

Decorin expression, straw-like structure, and differentiation of human costal cartilage.

Connective tissue research·2012
Same author

Polycystic ovary syndrome and the peripheral blood white cell count.

Journal of obstetrics and gynaecology : the journal of the Institute of Obstetrics and Gynaecology·2011
Same author

Variable number of tandem repeat polymorphisms (VNTRs) in the ACAN gene associated with pectus excavatum.

Clinical genetics·2010
Same author

ANAESTHESIA BY THE INTRATRACHEAL INSUFFLATION OF ETHER.

British medical journal·2010
Same journal

Efficient Monte Carlo simulations using a shuffled nested Weyl sequence random number generator.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2002
Same journal

Spatiotemporal dynamics of electromagnetic pulses in saturating nonlinear optical media with normal group velocity dispersion.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2002
Same journal

Soliton-breather reaction pathways.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2002
Same journal

Calculation of electromagnetic properties of regular and random arrays of metallic and dielectric cylinders.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2002
Same journal

Electromagnetic convective cells in a nonuniform dusty plasma.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2002
Same journal

Stability of neural networks and solitons of field theory.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2002
See all related articles

This study numerically investigates temporally modulated Rayleigh-Bénard convection. Results show frequency-dependent synchronous and subharmonic responses, with critical parameters scaling with frequency at high values.

Area of Science:

  • Fluid Dynamics
  • Nonlinear Dynamics
  • Heat Transfer

Background:

  • Rayleigh-Bénard convection is a fundamental model for heat transport.
  • Temporal modulation introduces complex dynamics not present in steady-state convection.
  • Understanding the onset of convection under time-varying conditions is crucial for various applications.

Purpose of the Study:

  • To numerically investigate the onset of temporally modulated Rayleigh-Bénard convection.
  • To analyze the effects of antisymmetric and asymmetric boundary temperature conditions.
  • To explore the behavior across a wide range of non-dimensional frequencies (omega).

Main Methods:

  • Numerical simulations were employed to study the system.
  • The study covered a continuous range of non-dimensional frequencies.

Related Experiment Videos

  • Analysis focused on neutral curves, critical wave number (k(c)), and critical Rayleigh number (R(c)).

    • Main Results:

    • For frequencies below 1, responses alternate between synchronous and subharmonic.
    • At high frequencies, critical wave number scales as omega(1/2) and critical Rayleigh number as omega(3/2).
    • Subharmonic responses dominate at high frequencies for both boundary conditions.

    Conclusions:

    • The study reveals complex frequency-dependent dynamics in modulated convection.
    • Asymptotic behaviors at high frequencies are identified and characterized.
    • Numerical findings show reasonable agreement with existing experimental data.