Name: hydrostatic pressure on submerged surfaces
Uploaded: 2025-02-13T15:43:11.000Z
Duration: 1 min 4 s
Channel: JoVE

Considere superficies planas sumergidas en un fluido con un peso específico. Las fuerzas se desarrollan en las superficies debido al fluido.
La resultante de las fuerzas desarrolladas sobre la superficie horizontal viene dada por el producto de la presión ejercida por el fluido sobre la superficie y el área de la superficie que actúa a través del centroide de la zona.
La resultante de las fuerzas sobre la superficie vertical viene dada por el producto del peso específico del fluido, el área de la superficie vertical y la profundidad del centroide del área desde la superficie del fluido.
Para una superficie sumergida inclinada, la fuerza que actúa sobre un elemento pequeño es el producto del peso específico del fluido, la profundidad del elemento desde la superficie del fluido y su área.
La integración de la fuerza que actúa sobre el parche da la resultante de la presión que actúa sobre toda la superficie inclinada.
El resultante parece estar actuando a través del centroide, pero en realidad actúa a través del punto debajo del centroide llamado centro de presión.

fuerza de presión hidrostática sobre una superficie plana

Cuando una superficie plana se sumerge en un fluido, se desarrollan fuerzas hidrostáticas sobre la superficie debido a la presión del fluido. Para superficies horizontales, la presión ejercida por el fluido es uniforme porque la profundidad permanece constante. La fuerza resultante está determinada por la presión a la profundidad dada multiplicada por el área de la superficie, y actúa a través del centroide de la superficie. Para superficies verticales, la presión varía con la profundidad, aumentando a medida que aumenta la distancia desde la superficie libre del fluido. La fuerza resultante se calcula como el producto del peso específico del fluido, el área de la superficie vertical y la profundidad del centroide desde la superficie del fluido. En el caso de una superficie inclinada, la fuerza que actúa sobre cada pequeño elemento de la superficie está influenciada por su profundidad y el peso específico del fluido. Para encontrar la fuerza total, se integran las contribuciones de todos los elementos de la superficie. Aunque puede parecer que la fuerza resultante actúa a través del centroide de la superficie, en realidad actúa a través de un punto llamado centro de presión, que se encuentra debajo del centroide. Este es el punto donde se puede considerar que actúa la presión hidrostática total.

Fuerza de presión hidrostática sobre una superficie plana

Considere superficies planas sumergidas en un fluido con un peso específico. Las fuerzas se desarrollan en las superficies debido al fluido.
La resultante de la ...

hydrostatic-pressure-force-on-a-plane-surface

Education

Educación

JoVE Core

Civil Engineering

Ingeniería Civil

Unit 1

Unidad 1

Fluid Statics

Estática de Fluidos

KEY TERMS AND CONCEPTS

TÉRMINOS Y CONCEPTOS CLAVE

Hydrostatic Pressure Force on a Plane Surface

hydrostatic pressure on submerged surfaces

Hydrostatic pressure creates force on submerged plane surfaces. The force depends on the fluid pressure and the area of the surface. The way that force acts changes with the surface position.

For a horizontal surface, the depth stays the same across the whole area. That means the pressure is uniform. The resultant force equals the pressure at that depth multiplied by the surface area, and it acts through the centroid of the surface.

For a vertical surface, pressure increases as depth increases below the free surface. The resultant force is found from the fluid’s specific weight, the area of the vertical surface, and the depth of the centroid from the fluid surface. An inclined surface is handled by looking at small surface elements, each affected by its own depth and the fluid’s specific weight. The total force comes from adding, or integrating, all of those small contributions.

The resultant force does not act at the centroid in every case. It acts at the center of pressure, which is below the centroid. This is the point where the total hydrostatic pressure can be treated as acting.

Hydrostatic Pressure on Submerged Surfaces

hydrostatic-pressure-on-submerged-surfaces

concept of pressure at a point

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hydrostatic pressure force on a plane surface

Hydrostatic pressure creates force on submerged plane surfaces. The force depends on the fluid pressure and the area of the surface. The way that force acts changes with the surface position. For a horizontal surface, the depth stays the same across the whole area. That means the pressure is uniform. The resultant force equals the pressure at that depth multiplied by the surface area, and it acts through the centroid of the surface. For a vertical surface, pressure increases as depth...

hydrostatic pressure force on a curved surface

hydrostatic-pressure-force-on-a-curved-surface

Finding the Force on Curved Fluid Surfaces

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How Buoyancy Keeps Bodies Stable in Water

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design example: application of archimedes' principle

design-example-application-of-archimedes-principle

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key terms and concepts

Learn how hydrostatic pressure acts on horizontal, vertical, and inclined submerged surfaces, and why the center of pressure is below the centroid.

Hydrostatic Pressure on Submerged Surfaces | JoVE K12

JoVE Core Civil Engineering provides a foundational exploration of essential construction materials in civil engineering, focusing on bricks, stones, steel, wood, and concrete through easy-to-understand animated videos. This collection covers the properties, manufacturing processes, and practical applications of these materials. Additionally, the accompanied science-in-action videos demonstrate the research experiments performed in laboratories.

Hydrostatic Pressure on Submerged Surfaces

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