Laplace pressure is pressure difference¶

The Laplace pressure is the pressure difference between the inside and the outside of a curved surface that forms the boundary between two fluid regions. This is caused by the surface tension at the fluid interface.

The terms outside and inside are related to the direction dictated by the curvature of the interface, not by the position relative to the fluid in question.

Links:

Wikipedia — Laplace pressure.

laplace_pressure¶: Laplace pressure of the fluid boundary.

Symbol:: p_L
Latex:: \(p_\text{L}\)
Dimension:: pressure

outside_pressure¶: pressure at the side that the interface is bulging from.

Symbol:: p_o
Latex:: \(p_\text{o}\)
Dimension:: pressure

inside_pressure¶: pressure at the side that the interface is bulging toward.

Symbol:: p_i
Latex:: \(p_\text{i}\)
Dimension:: pressure

law¶

p_L = p_o - p_i

Latex:: \[p_\text{L} = p_\text{o} - p_\text{i}\]