Talk:Cavitation#Meaning and scope

Suggestion on adding the below linked to this page - assuming this is the correct place to put this?

• [https://www.wired.com/2016/06/ar-15-can-human-body/ High-velocity assault rifle rounds, Cavitation]

Shaded0 (talk) 18:04, 7 November 2017 (UTC)

As it is, the lead says it is both. If the term comprises both formation and collapse, the lead needs a rewrite. --uKER (talk) 11:20, 20 February 2019 (UTC)

The term "cavitation" seems to be used with several different meanings:

1. The formation of any void in a liquid. Such a void may be air-filled, as for example in [https://www.biologydiscussion.com/plants/cavitation-and-embolism-in-vascular-plants-with-diagram/22732 this paper] on vascular plants. Void pressure is near-ambient/atmospheric.
2. The formation of a void specifically in a hydrodynamic situation where the dynamic pressure becomes comparable to the total pressure and the static pressure consequently falls below the fluid vapour pressure. Void pressure is near-vacuum.
3. The catastrophic collapse of such a near-vacuum void, [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3968802/ as here]
4. The oscillation of void size, due to the application of external energy such as acoustic or electromagnetic. The void pressure may be near-atmospheric or near-vacuum.

These last three are sometimes termed "inertial cavitation", while #2 and 3 are often combined in a single definition embracing both; this is common in engineering and is the dominant use of the term.

The article currently is very unclear about all this and mixes up different types of cavitation under a mishmash of section headings that bear little relation to their content. It needs expert attention. — Cheers, Steelpillow (Talk) 08:14, 16 July 2023 (UTC)

:In addition, the picture of a barge propeller with a semi-tunnel plate above it is also misleading as such plates are usually fitted to reduce another unwanted effect, which is the propeller aeration, i.e. sucking air from the surface on a shallow draft vessel. 213.18.147.110 (talk) 09:23, 2 October 2023 (UTC)

None of the three sources cited in the Aerodynamic cavitation subsection support the claim that the cavitation phenomenon exists in a gaseous medium:

- [https://www.researchgate.net/figure/Asymmetric-electrode-arrangement-of-an-aerodynamic-plasma-actuator_fig1_253041135 ref 21] the paper containing the references image does not mention cavitation at all.

- [https://www.researchgate.net/publication/301889798 ref 22] only mentions cavitation in the context of hydrofoils.

- [https://contest.techbriefs.com/2019/entries/aerospace-and-defense/9431 ref 23] is not credible, does not provide backup for claims made.

Hence I suggest this subsection be removed. Paul593 (talk) 12:44, 6 May 2025 (UTC)