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Related Concept Videos

Turbulent Flow01:24

Turbulent Flow

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 spots,...
Laminar and Turbulent Flow01:07

Laminar and Turbulent Flow

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 streamlines...
Surface Tension and Surface Energy01:16

Surface Tension and Surface Energy

When a paint brush is immersed in water, the bristles wave freely inside the water. When it is taken out, the bristles stick together. The reason behind this effect is surface tension.
Consider a beaker filled with liquid. The bulk molecules in the liquid experience equal attractive forces on all sides with the surrounding molecules. However, the surface molecules experience a net attractive force downward due to the bulk molecules. The surface of the liquid behaves like a stretched membrane,...
Boundary Layer Characteristics01:18

Boundary Layer Characteristics

When a fluid encounters a solid surface, a boundary layer forms due to the interaction between the fluid's motion and the stationary surface. This phenomenon is characterized by a thin region adjacent to the surface where viscous forces dominate, influencing the fluid's velocity profile. The development of the boundary layer begins at the leading edge of the surface and evolves as the fluid moves downstream.As the fluid flows over the surface, friction between the fluid and the wall slows down...
Laminar Flow01:27

Laminar Flow

Laminar flow represents a smooth, orderly fluid motion where particles move along parallel paths, resulting in minimal mixing between layers. Streamlined particle paths characterize this flow regime and occur under conditions where viscous forces dominate over inertial forces. The distinction between laminar, transitional, and turbulent flow is primarily determined by the Reynolds number, a dimensionless quantity calculated as:
Energy Conservation and Bernoulli's Equation01:16

Energy Conservation and Bernoulli's Equation

Applying the conservation of energy principle or the work-energy theorem to an incompressible, inviscid fluid in laminar, steady, irrotational flow leads to Bernoulli's equation. It states that the sum of the fluid pressure, potential, and kinetic energy per unit volume is constant along a streamline.
All the terms in the equation have the dimension of energy per unit volume. The kinetic energy per unit volume is called the kinetic energy density, and the potential energy per unit volume is...

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

Published on: February 27, 2016

Fuzzy performance between surface fitting and energy distribution in turbulence runner.

Zhongwei Liang1, Xiaochu Liu, Bangyan Ye

  • 1School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou 510006, China.

Thescientificworldjournal
|December 6, 2012
PubMed
Summary

Surface fitting algorithms influence kinetic energy distribution. This study quantifies this effect, revealing the relationship between algorithms, spatial features, and environmental parameters for turbulence kinetic energy analysis.

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Last Updated: May 16, 2026

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

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Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
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Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions

Published on: February 22, 2018

Area of Science:

  • Fluid Dynamics
  • Computational Mathematics

Background:

  • Surface fitting algorithms impact kinetic energy distribution analysis.
  • Understanding the mechanism of this influence under varying conditions is crucial.

Purpose of the Study:

  • To quantitatively analyze the relationship between surface fitting algorithms and kinetic energy distribution.
  • To develop a novel method for evaluating turbulence kinetic energy distribution features.

Main Methods:

  • Calculating kinetic energy parameters at representative points.
  • Applying surface fitting algorithms to model microkinetic energy distribution.
  • Developing a three-dimensional fuzzy quantitative evaluation method.

Main Results:

  • Quantified value change tendencies of kinetic energy distribution surface features.
  • Detailed quantitative analysis of the relationship between algorithm performance, spatial features, and environmental parameters.
  • Established a clear understanding of the fuzzy performance mechanism.

Conclusions:

  • The study provides a quantitative understanding of the inherent turbulence kinetic energy distribution performance mechanism.
  • The developed fuzzy quantitative evaluation method aids in analyzing complex fluid dynamics data.
  • Results facilitate further quantitative studies on turbulence energy.