Part 11: Characteristic Numbers·115 entries

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11-6.17

cavitation number

URNurn:iso:std:iso:80000:-11:ed-2:en:item:11-6.17

https://metanorma.github.io/isq-smart/quantities/part-11/t11-6.17
urn:iso:std:iso:80000:-11:ed-2:en:item:11-6.17

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-11:ed-2:en:item:11-6.17

IEC

urn:iec:std:iec:80000-11:2019:::item:11-6.17

Designations

ENcavitation number

FRnombre de cavitation

Symbol

C a

C n

Notation systems

Rendered

C a

Rendered

C n

AsciiMath

Ca

AsciiMath

Cn

LaTeX

C a

LaTeX

C n

Definition

quotient of the excess of local static head over vapour pressure head and velocity head for fast flow in liquids, expressed by

$C a = \frac{p - p_{v}}{ρ v^{2} / 2}$ ; where

$p$ :: is local static pressure (ISO 80000-4: Mechanics),

$p_{v}$ :: is vapour pressure (ISO 80000-4: Mechanics) of the fluid,

$ρ$ :: is mass density (ISO 80000-4: Mechanics) of the fluid, and

$v$ :: is characteristic speed (ISO 80000-3: Space and time) of the flow

quotient de l'excès de charge statique locale par rapport à la hauteur de pression de vapeur, par la charge dynamique pour un écoulement rapide dans des liquides, exprimé par:

$C a = \frac{p - p_{v}}{ρ v^{2} / 2}$ ; où

$p$ :: est la pression (ISO 80000-4: Mechanics) statique locale;

$p_{v}$ :: est la pression (ISO 80000-4: Mechanics) de vapeur du fluide;

$ρ$ :: est la masse volumique (ISO 80000-4: Mechanics) du fluide; et

$v$ :: est la vitesse caractéristique (ISO 80000-3: Space and time) de l'écoulement

Notes

The cavitation number represents the ratio of the excess of local static head over vapour pressure head to velocity head.

Le nombre de cavitation représente le rapport de l'excès de charge statique locale par rapport à la hauteur de pression de vapeur, à la charge dynamique.

Concept HierarchyPendrill (2024)

1dimensionless quantitiesLevel 0 · Kind

Broader concepts

◇ dimensionless quantities

Ontology
isq:Quantity smart:TermEntry

Class Hierarchy

smart:Entity smart:TermEntryisq:Quantity

A physical quantity as defined in ISO/IEC 80000, with associated symbols, definitions, and units of measurement.

Instance IRI

isq:t11-6.17

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	11-6.17
skosxl:prefLabel	"cavitation number"@en
skosxl:altLabel	"Ca"@en"Cn"@en
skos:definition	quotient of the excess of local static head over vapour pressure head and velocity head for fast flow in liquids, expres…
skos:note	The cavitation number represents the ratio of the excess of local static head over vapour pressure head to velocity head…
isq:hasDimension	isq:Dimension
smart:hasBindingnessType	bindingness-type:normative
dcterms:isPartOf	isq:part-11

Related Entities

isq:QuantityShape isq:part-11 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry