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Civil Engineering

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Fluid Statics

Finding the Force on Curved Fluid Surfaces

Description

Hydrostatic pressure on curved surfaces is an important idea in fluid mechanics. It helps explain how water pushes on curved structures in civil engineering. Examples include reservoirs, dams, and storage tanks. The pressure changes in both size and direction along the curve.

To find the total hy...

Transcript

考虑一个装有已知重度流体的游泳池,其底部具有曲面。

如果沿单位长度用水平面和垂直面将曲面周围的体积隔离,则水平面和垂直面会因流体作用而受到垂直于各自平面的力。

封闭体积内流体的自重等于流体的重度与封闭空间体积的乘积,作用点位于该体积的重心处。

曲面在水平和竖直方向上对流体施加的力分量,可以通过作用在水平面和竖直面上的力,以及隔离体积内流体的自重来表示。

最后,作用在曲面上的静水力等于泳池曲面施加于流体的各分力平方和的平方根。