Skip to main content

Illustration Bernoulli's principle applied to a flowing liquid

Bernoulli's principle applied to a flowing liquid
Bernoulli principle applied to a flowing liquid
Download illustration

Share — copy and redistribute the material in any medium or format

Adapt — remix, transform, and build upon the material for any purpose, even commercially.

Sharing and adapting of the illustration is allowed with indication of the link to the illustration.

A liquid (e.g. water, blood) of density \(\rho\) flows through a pipe. As an example, a cross-sectional area of the pipe is considered. The static pressure \(\mathit{\Pi}_{\text{s}}\) acts on this area, which is at the height \(h\) above the ground. The fluid moves through the cross-sectional area with the average flow velocity \(v\).

Bernoulli's principle states that the flow velocity \(v\) increases when the pressure \(\mathit{\Pi}_{\text{s}}\) decreases and vice versa.