Talk:Stagnation point

I removed the following questionable passage from the article, and moved it here in case someone wants to try to salvage it:

Also, stagnates is when you have too many afferent ducts of liquid in a compartment and the amount of efferent ducts is less than the incoming. So the liquid stagnates or remain in the compartment for a while. An example of this is on the circulation of the lymph nodes where the lymph stagnates there allowing macrophages and lymphocytes time to carry out protective functions.

The above passage is totally irrelevant to stagnation point. Salih (talk) 12:51, 26 December 2008 (UTC)

Wrong definition of the stagnation point

Good morning all. Once we accept the "no slip condition", all the particles of a viscous fluid flow in contact with the body have a zero velocity. Your definition of stagnation point is therefore not valid. I had to correct my definition myself (in fr.wikipedia) with this in mind. Best regards, Bernard de Go Mars (talk) 08:46, 14 April 2020 (UTC)

In the 5 years since this post was added here, I think the problem has been corrected.

The twin concepts of stagnation point and a point at which static pressure is a maximum (pressure coefficient equals unity, or 1) are linked by Bernoulli’s equation. This equation and Bernoulli’s principle more broadly are only valid in the absence of frictional forces such as viscosity. The no-slip condition is an acknowledgement that viscous shear forces exist everywhere at the boundary of a flowing fluid, and therefore Bernoulli’s principle is not valid at, and should not be applied at, the boundary. Therefore the concepts of stagnation point and pressure coefficient are valid in inviscid flows but should not be applied to the boundary layer. Dolphin (t) 23:59, 6 December 2025 (UTC)