Talk:Cavitation

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Cavitation in plants (2)[edit]

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)[reply]

External links modified[edit]

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Bullet wounds[edit]

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)[reply]

Cavitation is the formation of the bubbles or its collapse?[edit]

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)[reply]

is there sonoluminescence in your joints when they pop[edit]

Meaning and scope[edit]

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

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.
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.
The catastrophic collapse of such a near-vacuum void, as here
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)[reply]

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)[reply]