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Related Concept Videos

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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Fluid Pressure over Flat Plate of Variable Width01:02

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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.
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Fluid Pressure over Flat Plate of Constant Width01:05

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When a body is submerged in water, it experiences fluid pressure acting normal on its surface and distributed over its area. For better design structures, it is crucial to determine the magnitude and location of the resultant force acting on the surface. In the case of a rectangular plate of constant width submerged in water, the pressure increases with depth, resulting in a linearly varying trapezoidal pressure distribution from the upper to the lower edge of the plate.
The resultant force...
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Hydrostatic Pressure Force on a Curved Surface01:04

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Hydrostatic pressure on curved surfaces is a fundamental concept in fluid mechanics with broad applications in the civil engineering field. When fluid is in contact with a curved surface, as in a reservoir, dam, or storage tank, it exerts pressure that varies in magnitude and direction along the curved surface. To assess the total hydrostatic force exerted by the fluid on a curved structure, engineers typically isolate the fluid volume adjacent to the surface and analyze the forces acting on...
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Concept of Pressure at a Point01:15

Concept of Pressure at a Point

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The concept of pressure at a point in a fluid establishes that pressure within a fluid is uniform in all directions at a specific location. This uniformity occurs because fluid molecules exert force evenly across any point due to their random motion and continuous collisions within the fluid. Pressure at a point is determined by the surrounding fluid molecules and is influenced by factors like depth and density, rather than by shape or orientation.
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Hydrostatic Pressure Force on a Plane Surface01:04

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When a plane surface is submerged in a fluid, hydrostatic forces develop on the surface due to the fluid's pressure. For horizontal surfaces, the pressure exerted by the fluid is uniform because the depth remains constant. The resultant force is determined by the pressure at the given depth multiplied by the area of the surface, and it acts through the centroid of the surface. For vertical surfaces, the pressure varies with depth, increasing as the distance from the fluid's free surface...
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A Cost-effective and Reliable Method to Predict Mechanical Stress in Single-use and Standard Pumps
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A Concise Method to Predict the Mean Dynamic Pressure on a Plunge Pool Slab.

Maolin Zhou1, Xin Li1, Jianmin Zhang1

  • 1State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China.

Entropy (Basel, Switzerland)
|January 21, 2022
PubMed
Summary
This summary is machine-generated.

This study presents a new method to predict hydrodynamic pressure on plunge pool slabs from jet impingement, crucial for high dam safety. The model uses jet trajectories and Gaussian distribution for accurate pressure field prediction.

Keywords:
dimensional analysisdynamic pressureflip bucketjet trajectoryparabolic trajectoryplunge pool

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Area of Science:

  • Hydraulic engineering
  • Fluid dynamics
  • Civil engineering

Background:

  • Hydrodynamic pressure on plunge pool slabs from jet impingement is critical for high dam safety.
  • Understanding pressure characteristics from different flip bucket designs (CFB and SFB) is essential.

Purpose of the Study:

  • To experimentally investigate pressure characteristics induced by jets from constant width flip buckets (CFB) and slit flip buckets (SFB).
  • To propose and validate a concise computational method for predicting the mean dynamic pressure field on plunge pool slabs.

Main Methods:

  • Flume experiments using a pressurized plane pipe to control inlet velocities.
  • Predicting pressure field position using parabolic trajectory theory for free jets.
  • Determining maximum mean dynamic pressure via dimensional analysis and applying Gaussian distribution.

Main Results:

  • A concise computational procedure was developed using easily obtainable parameters.
  • Formulas for key coefficients (takeoff velocity, takeoff angle, k2) were derived by fitting experimental data.
  • The proposed method accurately calculates maximum mean dynamic pressure using geometric and initial hydraulic conditions.

Conclusions:

  • The developed method provides a practical approach for calculating hydrodynamic pressure on plunge pool slabs.
  • The findings offer valuable references for hydraulic applications in high dam projects.
  • Experimental validation confirmed the practicability and accuracy of the proposed prediction model.