Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Typical Model Studies

Typical Model Studies

Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.

Design Example: Creating a Hydraulic Model of a Dam Spillway

Design Example: Creating a Hydraulic Model of a Dam Spillway

Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.

Uniform Depth Channel Flow

Uniform Depth Channel Flow

Uniform depth channel flow keeps fluid depth consistent along channels such as irrigation canals. In natural channels, such as rivers, approximate uniform flow is often assumed. This condition occurs when the channel’s bottom slope matches the energy slope, balancing potential energy lost from gravity with head loss due to shear stress. This balance prevents depth changes along the channel length, resulting in a steady, uniform flow.Uniform flow in open channels with a constant cross-section...

Buoyancy and Stability for Submerged and Floating Bodies

Buoyancy and Stability for Submerged and Floating Bodies

In fluid mechanics, buoyancy and stability are key concepts for understanding the behavior of submerged and floating bodies. When a stationary body is fully or partially submerged in a fluid, the fluid exerts a force on the body known as the buoyant force. This force acts vertically upward through a point called the center of buoyancy, which is the center of the displaced fluid volume. According to Archimedes' principle, the magnitude of the buoyant force is equal to the weight of the fluid...

Couette Flow

Couette Flow

Couette flow represents the flow of fluid between two parallel plates, with one plate fixed and the other moving with a constant velocity. This configuration allows for a simplified analysis using the Navier-Stokes equations, which govern fluid motion under conditions of viscosity and incompressibility. For Couette flow, the assumptions include a steady, laminar, incompressible flow with a zero-pressure gradient in the flow direction. This flow type is beneficial for understanding shear-driven...

Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model

Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model

Various dissolution theories provide insight into the factors that influence the dissolution rate. Danckwerts' Model suggests that turbulence, rather than a stagnant layer, characterizes the dissolution medium at the solid-liquid interface. In this model, the agitated solvent contains macroscopic packets that move to the interface via eddy currents, facilitating the absorption and delivery of the drug to the bulk solution. The regular replenishment of solvent packets maintains the concentration...

You might also read

Related Articles

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

Sort by

Same author

Current-vortex-sheet model of the magnetic Rayleigh-Taylor instability.

Physical review. E·2024

Same author

Motion of a current-vortex sheet in the magnetic Kelvin-Helmholtz instability.

Physical review. E·2023

Same author

Stability of barotropic vortex strip on a rotating sphere.

Proceedings. Mathematical, physical, and engineering sciences·2018

Same author

Long-time simulations of the Kelvin-Helmholtz instability using an adaptive vortex method.

Physical review. E, Statistical, nonlinear, and soft matter physics·2011

Same author

Effects of surface tension and viscosity on the growth rates of Rayleigh-Taylor and Richtmyer-Meshkov instabilities.

Physical review. E, Statistical, nonlinear, and soft matter physics·2010

Same author

Quantitative modeling of bubble competition in Richtmyer-Meshkov instability.

Physical review. E, Statistical, nonlinear, and soft matter physics·2008

Search research articles

Related Experiment Video

Updated: Jul 13, 2026

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Published on: May 9, 2021

Bubble interaction model for hydrodynamic unstable mixing.

¹Department of Mathematics, Kangnung National University, Kangnung 210-702, Korea. sohnsi@kangnung.ac.kr

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|August 7, 2007

Summary

This study introduces an analytic model for Rayleigh-Taylor mixing, accurately predicting single and multiple bubble evolution. The model reveals key dynamics like bubble competition and provides insights into growth coefficients and self-similar behaviors.

More Related Videos

Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique

Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique

Published on: June 12, 2015

Visualization of High Speed Liquid Jet Impaction on a Moving Surface

Visualization of High Speed Liquid Jet Impaction on a Moving Surface

Published on: April 17, 2015

Related Experiment Videos

Last Updated: Jul 13, 2026

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Published on: May 9, 2021

Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique

Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique

Published on: June 12, 2015

Visualization of High Speed Liquid Jet Impaction on a Moving Surface

Visualization of High Speed Liquid Jet Impaction on a Moving Surface

Published on: April 17, 2015

Area of Science:

Fluid dynamics
Plasma physics
Astrophysical phenomena

Background:

Rayleigh-Taylor (RT) instability is crucial in various physical systems, including inertial confinement fusion and astrophysical processes.
Understanding bubble evolution in RT mixing is essential for accurate modeling and prediction.
Existing models often struggle with arbitrary density ratios and complex multi-bubble interactions.

Purpose of the Study:

To develop an analytic model for single and multiple bubble evolution in Rayleigh-Taylor mixing across arbitrary density ratios.
To extend Zufiria's potential theory for enhanced predictive capabilities.
To investigate bubble competition dynamics and scaling laws.

Main Methods:

Extension of Zufiria's potential theory using velocity potential with point sources.
Derivation of solutions for single bubble velocity and curvature.
Analysis of multiple bubble interactions, including competition and growth dynamics.
Investigation of scaling laws and self-similar behavior in bubble evolution.

Main Results:

The analytic model shows good agreement with numerical results for single bubble velocity and curvature.
The model captures the dynamics of bubble competition, where larger bubbles consume smaller ones.
The growth coefficient (alpha) depends on the Atwood number and perturbation amplitude.
Bubble aspect ratio exhibits self-similar behavior, independent of the Atwood number.

Conclusions:

The developed analytic model provides a robust framework for studying Rayleigh-Taylor mixing.
The model accurately predicts key parameters like bubble growth and competition dynamics.
Findings offer valuable insights for simulations and experiments in fluid dynamics and astrophysics.