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Related Concept Videos

Pressure of Fluids01:14

Pressure of Fluids

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There are many examples of pressure in fluids in everyday life, such as in relation to blood (high or low blood pressure) and in relation to weather (high- and low-pressure weather systems). A given force can have a significantly different effect, depending on the area over which the force is exerted. For instance, a force applied to an area of 1 mm2 has a pressure that is 100 times greater than the same force applied to an area of 1 cm2. That's why a sharp needle is able to poke through...
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Newtonian Fluid: Problem Solving01:18

Newtonian Fluid: Problem Solving

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Newtonian fluids exhibit a constant viscosity, meaning their shear stress and shear strain rate are directly proportional. This property ensures a predictable and stable response to applied forces, maintaining a linear relationship between force and flow. Examples include water, air, and light oils, consistently demonstrating this proportional behavior regardless of external conditions.
A velocity gradient forms within the fluid when a Newtonian fluid is placed between two parallel plates, with...
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Accelerating Fluids01:17

Accelerating Fluids

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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.
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
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Fluid Pressure over Curved Plate of Constant Width01:12

Fluid Pressure over Curved Plate of Constant Width

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When a curved plate of constant width is submerged in a liquid, the pressure acting normal to the plate varies continuously both in magnitude and direction. Calculating the magnitude and location of the resultant force at a point is often challenging for such cases. One of the methods to determine the resultant force and its location involves separately calculating the horizontal and vertical components of the resultant force. This complex calculation can be simplified by representing the...
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Pressure Variation in a Fluid at Rest01:11

Pressure Variation in a Fluid at Rest

420
In a fluid at rest, the pressure at any point beneath the fluid surface depends solely on the depth, not on the container's shape or size. This principle, known as hydrostatic pressure, arises because, in stationary fluids, there is no acceleration, meaning the forces within the fluid balance out. Only vertical forces, caused by the weight of the fluid above, contribute to pressure changes with depth.
When measuring pressure at two different levels within the fluid, the difference in...
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Fluid Pressure over Flat Plate of Variable Width01:02

Fluid Pressure over Flat Plate of Variable Width

1.8K
When a flat plate is submerged in a fluid, the fluid exerts pressure on the plate. This pressure can lead to many different phenomena, including drag and buoyancy. To understand the behavior of the fluid over a flat plate of variable width, it is essential to analyze the distribution of the pressure exerted.
The pressure distribution on the plate can be calculated by determining the force that acts on a differential area strip of the plate. Thus, the magnitude of the force is equal to the...
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Related Experiment Video

Updated: Sep 24, 2025

Simulation of the Planetary Interior Differentiation Processes in the Laboratory
06:04

Simulation of the Planetary Interior Differentiation Processes in the Laboratory

Published on: November 15, 2013

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Fluid Dynamics Experiments for Planetary Interiors.

Michael Le Bars1, Ankit Barik2, Fabian Burmann3

  • 1CNRS, Aix Marseille Univ, Centrale Marseille, IRPHE UMR 7342, 13013 Marseille, France.

Surveys in Geophysics
|May 10, 2022
PubMed
Summary
This summary is machine-generated.

Laboratory experiments complement numerical simulations to study turbulent fluid dynamics in planetary interiors. This research explores extreme flow regimes, aiding our understanding of planetary cores and oceans.

Keywords:
InstabilitiesPlanetary coresRotational fluid dynamicsSubsurface oceansTurbulenceWaves

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Area of Science:

  • Planetary Science
  • Fluid Dynamics
  • Geophysics

Background:

  • Understanding fluid flows in planetary interiors is crucial for interpreting observational data.
  • Planetary fluid dynamics involve complex turbulence and rotation at large scales.

Purpose of the Study:

  • To review how laboratory experiments, alongside theoretical and numerical studies, enhance understanding of planetary interior flows.
  • To explore fluid dynamics driven by precession, libration, differential rotation, and boundary topography.

Main Methods:

  • Laboratory experiments to simulate extreme flow regimes.
  • Theoretical analysis and numerical simulations for complementary insights.
  • Systematic exploration of long-duration flow dynamics.

Main Results:

  • Experimental approaches provide key insights into planetary interior fluid dynamics.
  • Demonstrated the importance of mechanical forcing (precession, libration, etc.) in driving flows.
  • Highlighted the complementary nature of experiments and simulations.

Conclusions:

  • Laboratory experiments are vital for studying planetary fluid dynamics, especially in extreme regimes.
  • Combined approaches offer a comprehensive understanding of planetary core and ocean flows.
  • Experimental data aids interpretation of geophysical observational data.