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

Turbulent Flow01:24

Turbulent Flow

244
Turbulent flow is characterized by unpredictable fluctuations in velocity and pressure, which result in a chaotic fluid movement distinct from the orderly patterns of laminar flow. While laminar flow is governed by smooth, parallel layers with minimal mixing, turbulent flow exhibits highly irregular, three-dimensional patterns. This behavior arises due to instabilities in the fluid's velocity profile, and amplifies as the flow velocity increases. Minor disturbances, known as turbulent...
244
Laminar and Turbulent Flow01:07

Laminar and Turbulent Flow

8.7K
Fluid dynamics is the study of fluids in motion. Velocity vectors are often used to illustrate fluid motion in applications like meteorology. For example, wind—the fluid motion of air in the atmosphere—can be represented by vectors indicating the speed and direction of the wind at any given point on a map. Another method for representing fluid motion is a streamline. A streamline represents the path of a small volume of fluid as it flows. When the flow pattern changes with time, the...
8.7K
Couette Flow01:22

Couette Flow

373
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...
373
Region of Convergence of Laplace Tarnsform01:20

Region of Convergence of Laplace Tarnsform

633
The Region of Convergence (ROC) is a fundamental concept in signal processing and system analysis, particularly associated with the Laplace transform. The ROC represents an area in the complex plane where the Laplace transform of a given signal converges, determining the transform's applicability and utility.
Consider a decaying exponential signal that begins at a specific time. When deriving its Laplace transform, the time-domain variable is replaced with a complex variable. This...
633
Turbulent Flow: Problem Solving01:09

Turbulent Flow: Problem Solving

171
Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures...
171
IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations01:08

IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations

1.1K
Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single...
1.1K

You might also read

Related Articles

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

Sort by
Same author

Association between early-life submicron particulate matter exposure, inducible nitric oxide synthase methylation, and children's asthma/wheezing.

Journal of environmental sciences (China)·2026
Same author

An F-box protein OsFKF1 interacts with either OsGI or Hd1 and mediates the degradation of OsGI to control flowering time in rice.

Science advances·2026
Same author

A GSH-scavenging and synthesis-blocking microneedle patch for augmenting photodynamic eradication of diabetic wound biofilms.

Journal of materials chemistry. B·2026
Same author

Targeting miR-10 alleviates atherosclerosis by enhancing intestinal ABCA1-mediated cholesterol efflux and repairing intestinal barrier.

Microvascular research·2026
Same author

A triple-network hydrogel synergistically constructed via hydrophobic interactions, hemicellulose-mediated Diels-Alder bonds, and Fe<sup>3+</sup> coordination for flexible sensors and TENGs.

Carbohydrate polymers·2026
Same author

Breaking self-incompatibility for diploid hybrid potato breeding: advances, mechanisms, and emerging technologies.

Frontiers in plant science·2026
Same journal

Research on a Regional Availability Evaluation Model for Road-Area High-Entropy Energy Based on Synergy Factors.

Entropy (Basel, Switzerland)·2026
Same journal

Atmospheric Turbulence Channel Modeling and Performance Analysis of a CO-ZP-OFDM Coherent Optical Communication System for UAV Air-to-Ground Scenarios.

Entropy (Basel, Switzerland)·2026
Same journal

Information Geometry and Asymptotic Theory for SMML Estimators.

Entropy (Basel, Switzerland)·2026
Same journal

Correlation Entropy and Power-Law Kinetics.

Entropy (Basel, Switzerland)·2026
Same journal

Research on the Contagion of Systemic Financial Risk Under the Impact of Climate Risks-From the Perspective of Complex Networks and Machine Learning.

Entropy (Basel, Switzerland)·2026
Same journal

The Statistical-Mechanical Meaning of the Wave Function of Quantum Mechanics.

Entropy (Basel, Switzerland)·2026
See all related articles

Related Experiment Video

Updated: Aug 13, 2025

Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow
13:02

Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow

Published on: February 27, 2016

12.4K

Liutex-Represented Vortex Spectrum in Turbulence.

Bowen Yan1, Yiqian Wang2, Chaoqun Liu3

  • 1Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China.

Entropy (Basel, Switzerland)
|January 21, 2023
PubMed
Summary
This summary is machine-generated.

The new Liutex vector reveals more intermittency in turbulent flows than vorticity. Its unique viscous similarity law in turbulence may aid in understanding and modeling fluid motion.

Keywords:
Liutexhomogeneousisotropic turbulencesimilarity lawturbulenceturbulent channelvortex

More Related Videos

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods
09:17

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods

Published on: April 23, 2018

10.8K
Preparation of Free-Surface Hyperbolic Water Vortices
04:35

Preparation of Free-Surface Hyperbolic Water Vortices

Published on: July 28, 2023

2.8K

Related Experiment Videos

Last Updated: Aug 13, 2025

Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow
13:02

Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow

Published on: February 27, 2016

12.4K
Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods
09:17

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods

Published on: April 23, 2018

10.8K
Preparation of Free-Surface Hyperbolic Water Vortices
04:35

Preparation of Free-Surface Hyperbolic Water Vortices

Published on: July 28, 2023

2.8K

Area of Science:

  • Fluid dynamics
  • Turbulence research

Background:

  • The Liutex vector is a novel quantity for analyzing fluid rotation.
  • Understanding turbulence requires characterizing vortical structures and their statistical properties.

Purpose of the Study:

  • To investigate the intermittency and power-law similarity of the Liutex vector.
  • To compare the Liutex vector's behavior with the vorticity vector in turbulent flows.
  • To explore the implications of Liutex vector properties for turbulence modeling.

Main Methods:

  • Analysis of Liutex vector intermittency in homogeneous isotropic turbulence and turbulent channel flows.
  • Calculation of three-dimensional energy spectrums for velocity, vorticity, and Liutex vector.
  • Examination of power-law scaling in inertial and viscous subranges.

Main Results:

  • The Liutex vector exhibits higher intermittency than the vorticity vector.
  • Liutex vector magnitude iso-surfaces effectively capture major rotating motions.
  • Power-law scaling is observed for velocity (-5/3), vorticity (1/3), and Liutex vector (1/3) spectrums in the inertial subrange.
  • A unique -10/3 power law for the Liutex energy spectrum is found in the viscous subrange, persisting near walls.

Conclusions:

  • The Liutex vector's intermittency suggests its utility in identifying vortical structures.
  • The discovered viscous similarity law for the Liutex vector, free from shear contamination, offers insights into small-scale turbulence coherence.
  • This property could be crucial for advancing turbulence understanding and modeling.