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 Concept Videos

Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion03:48

Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion

28.6K
Although gaseous molecules travel at tremendous speeds (hundreds of meters per second), they collide with other gaseous molecules and travel in many different directions before reaching the desired target. At room temperature, a gaseous molecule will experience billions of collisions per second. The mean free path is the average distance a molecule travels between collisions. The mean free path increases with decreasing pressure; in general, the mean free path for a gaseous molecule will be...
28.6K
Distribution of Molecular Speeds01:27

Distribution of Molecular Speeds

3.9K
The motion of molecules in a gas is random in magnitude and direction for individual molecules, but a gas of many molecules has a predictable distribution of molecular speeds. This predictable distribution of molecular speeds is known as the Maxwell-Boltzmann distribution. The distribution of molecular speeds in liquids is comparable to that of gases but not identical and can help to understand the phenomenon of the boiling and vapor pressure of a liquid. Consider that a molecule requires a...
3.9K
Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility02:34

Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility

43.9K
Intermolecular forces are attractive forces that exist between molecules. They dictate several bulk properties, such as melting points, boiling points, and solubilities (miscibilities) of substances. Molar mass, molecular shape, and polarity affect the strength of different intermolecular forces, which influence the magnitude of physical properties across a family of molecules.
Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...
43.9K
Diffusion on Chromatography Columns01:07

Diffusion on Chromatography Columns

469
In column chromatography, when an analyte is introduced as a narrow band at the top of the column, the solutes begin to separate and broaden, developing a Gaussian profile. This broadening occurs due to various factors, such as longitudinal diffusion.
Longitudinal diffusion occurs when the solute molecules in the mobile phase diffuse from the more concentrated center of the chromatographic band to the more dilute regions on either side, both towards and against the flow direction. This...
469
Poiseuille's Law and Reynolds Number01:10

Poiseuille's Law and Reynolds Number

6.4K
Any fluid in a horizontal tube can flow due to pressure differences—fluid flows from high to low pressure. The flow rate (Q) is the ratio of pressure difference and resistance through a horizontal tube. The greater the pressure difference, the higher the flow rate. The flow resistance is expressed as:
6.4K
Maxwell-Boltzmann Distribution: Problem Solving01:20

Maxwell-Boltzmann Distribution: Problem Solving

1.4K
Individual molecules in a gas move in random directions, but a gas containing numerous molecules has a predictable distribution of molecular speeds, which is known as the Maxwell-Boltzmann distribution, f(v).
This distribution function f(v) is defined by saying that the expected number N (v1,v2) of particles with speeds between v1 and v2 is given by
1.4K

You might also read

Related Articles

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

Sort by
Same author

Cerebral superb microvascular imaging in preterm neonates: in vivo evaluation of thalamic, striatal, and extrastriatal angioarchitecture.

Neuroradiology·2021
Same author

Anisotropic bidispersive convection.

Proceedings. Mathematical, physical, and engineering sciences·2019
Same author

The Horton-Rogers-Lapwood problem for an inclined porous layer with permeable boundaries.

Proceedings. Mathematical, physical, and engineering sciences·2018
Same author

Feasibility and reliability of flow-cytometry (fcm) DNA analysis of fresh and fixed urine samples.

Oncology reports·2011
Same author

From chronic overfeeding to hepatic injury: role of endoplasmic reticulum stress and inflammation.

Nutrition, metabolism, and cardiovascular diseases : NMCD·2011
Same author

From chronic overnutrition to insulin resistance: the role of fat-storing capacity and inflammation.

Nutrition, metabolism, and cardiovascular diseases : NMCD·2009

Related Experiment Video

Updated: Jun 7, 2025

Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

9.5K

Anomalous mass diffusion in a binary mixture and Rayleigh-Bénard instability.

A Barletta1, B Straughan2

  • 1Department of Industrial Engineering, Alma Mater Studiorum <a href="https://ror.org/01111rn36">Università di Bologna</a>, Viale Risorgimento 2, 40136 Bologna, Italy.

Physical Review. E
|November 20, 2024
PubMed
Summary
This summary is machine-generated.

This study explores Rayleigh-Bénard instability in binary mixtures, focusing on anomalous diffusion. It extends stability analysis to include subdiffusion and superdiffusion phenomena driven by concentration buoyancy.

More Related Videos

The Diffusion of Passive Tracers in Laminar Shear Flow
08:01

The Diffusion of Passive Tracers in Laminar Shear Flow

Published on: May 1, 2018

8.5K
Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique
10:12

Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique

Published on: June 12, 2015

8.9K

Related Experiment Videos

Last Updated: Jun 7, 2025

Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

9.5K
The Diffusion of Passive Tracers in Laminar Shear Flow
08:01

The Diffusion of Passive Tracers in Laminar Shear Flow

Published on: May 1, 2018

8.5K
Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique
10:12

Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique

Published on: June 12, 2015

8.9K

Area of Science:

  • Fluid dynamics
  • Non-equilibrium thermodynamics
  • Statistical mechanics

Background:

  • Rayleigh-Bénard instability is a classic fluid dynamics problem.
  • Anomalous diffusion deviates from standard Fick's law, exhibiting power-law scaling of mean squared displacement with time.
  • Binary mixtures introduce concentration gradients as a potential driving force for instability.

Purpose of the Study:

  • To investigate the onset of Rayleigh-Bénard instability in a binary fluid mixture.
  • To analyze the role of anomalous diffusion (subdiffusion and superdiffusion) in driving this instability.
  • To extend the classical stability analysis by incorporating anomalous diffusion models.

Main Methods:

  • Theoretical analysis of fluid dynamics equations for a binary mixture.
  • Inclusion of a power-law diffusion model into the governing equations.
  • Stability analysis to determine critical conditions for the onset of convection.

Main Results:

  • The study demonstrates that anomalous diffusion can significantly alter the conditions for Rayleigh-Bénard instability.
  • Subdiffusion and superdiffusion regimes exhibit distinct effects on the stability criteria.
  • The power-law index of anomalous diffusion is identified as a critical parameter influencing the instability onset.

Conclusions:

  • Anomalous diffusion is a relevant phenomenon that modifies classical fluid instabilities.
  • The framework developed allows for the study of complex diffusion processes in convective instabilities.
  • This research provides insights into the behavior of binary mixtures under non-standard diffusion conditions.