Talk:Cavitation

Cavitation in plants (2)

Hi, I became interested in the following part: "Deciduous trees shed leaves in the autumn partly because cavitation increases as temperatures decrease.[32] "

This seems unlikely, as decreasing the temperature makes the vapour pressure of water lower, and it is a known method of avoiding cavitation. I also read the reference, it doesn't mention anything about temperature - or the process of trees shedding their leaves in autumn. — Preceding unsigned comment added by 88.95.153.91 (talk) 19:52, 17 September 2015 (UTC)

External links modified

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Bullet wounds

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

• High-velocity assault rifle rounds, Cavitation

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

Cavitation is the formation of the bubbles or its collapse?

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)

Meaning and scope

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 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, 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)