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Related Concept Videos

Laminar and Turbulent Flow01:07

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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...
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Turbulent Flow01:24

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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...
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Turbulent Flow: Problem Solving01:09

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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.
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The Fluid Mosaic Model01:34

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Fluid Pressure01:14

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In mechanical engineering, fluid pressure plays a critical role in designing systems that utilize liquid flow, such as hydraulic systems, pumps, and valves. When designing these systems, engineers must ensure they can withstand the forces created by fluid pressure to avoid damage or failure.
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When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
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Updated: Feb 8, 2026

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
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Turbulent Micropolar SPH Fluids with Foam.

Jan Bender, Dan Koschier, Tassilo Kugelstadt

    IEEE Transactions on Visualization and Computer Graphics
    |July 12, 2018
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    Summary
    This summary is machine-generated.

    This study introduces a novel micropolar fluid model for Smoothed Particle Hydrodynamics (SPH) simulations, enhancing turbulent fluid dynamics by incorporating microrotation. The model improves realism and generates foam effectively with minimal computational cost.

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    Area of Science:

    • Computational fluid dynamics
    • Physics
    • Computer graphics

    Background:

    • Smoothed Particle Hydrodynamics (SPH) simulations often suffer from numerical diffusion, reducing turbulent details and realism.
    • Classical Navier-Stokes equations lack the microstructure to capture rotational fluid motion and vortex dynamics.

    Purpose of the Study:

    • To develop a novel micropolar material model for simulating turbulent inviscid fluids using SPH.
    • To address the limitations of existing SPH methods in accurately representing turbulence and generating realistic visual features like foam.

    Main Methods:

    • Introduced a modified micropolar fluid model for inviscid fluids with non-dissipative coupling.
    • Integrated the model into Smoothed Particle Hydrodynamics (SPH) for fluid simulations.
    • Developed a post-processing method for foam generation based on microrotation.

    Main Results:

    • The proposed model generates realistic turbulence by considering the rotational motion of fluid particles.
    • The model conserves linear and angular momentum and is easily integrated into existing SPH methods.
    • A novel, automatic foam generation method based on microrotation was presented, requiring minimal user input.

    Conclusions:

    • The novel micropolar fluid model significantly enhances the simulation of turbulent inviscid fluids in SPH.
    • The model offers a computationally efficient and visually accurate approach to fluid simulation, including realistic turbulence and foam generation.