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Part 55-17.2

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Part 5: Thermodynamics·54 entries

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Section 5-172 entries

5-17.1ratio of specific heat capacities 5-17.2isentropic exponent, isentropic expansion factor

5-17.2

isentropic exponent, isentropic expansion factor

URNurn:iso:std:iso:80000:-5:ed-2:en:item:5-17.2

Download RDF.jsonld .ttl

https://metanorma.github.io/isq-smart/quantities/part-5/t5-17.2
urn:iso:std:iso:80000:-5:ed-2:en:item:5-17.2

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-5:ed-2:en:item:5-17.2

IEC

urn:iec:std:iec:80000-5:2019:::item:5-17.2

Designations

ENisentropic exponent

FRexposant isentropique

ENisentropic expansion factor

FRcoefficient de dilatation isentropique

Symbol

κ

Notation systems

Rendered

κ

AsciiMath

kappa

LaTeX

\kappa

Definition

the negative of relative pressure change, divided by relative volume change, at constant entropy:

κ = - \frac{V}{p} {(\frac{\partial p}{\partial V})}_{S}

where $V$ is volume (ISO 80000-3: Space and time), $p$ is pressure (ISO 80000-4: Mechanics), and $S$ is entropy (entropy)

opposé du quotient de la variation relative de pression par la variation relative de volume, à entropie constante:

κ = - \frac{V}{p} {(\frac{\partial p}{\partial V})}_{S}

où $V$ est le volume (ISO 80000-3: Space and time), $p$ est la pression (ISO 80000-4: Mechanics) et $S$ est l'entropie (entropy).

Units

1

one

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Notes

For an ideal gas, $κ$ is equal to $γ$ (ratio of specific heat capacities).

Pour un gaz idéal, $κ$ est égal à $γ$ (ratio of specific heat capacities).

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:t5-17.2

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	5-17.2
skosxl:prefLabel	"isentropic exponent"@en
skosxl:altLabel	"isentropic expansion factor"@en"kappa"@en
skos:definition	the negative of relative pressure change, divided by relative volume change, at constant entropy: [stem%unnumbered] +++…
skos:note	For an ideal gas, stem:[kappa] is equal to stem:[gamma] (<<t5-17.1>>).
isq:hasUnit	1 (one)
isq:hasDimension	isq:Dimension
smart:hasBindingnessType	bindingness-type:normative
dcterms:isPartOf	isq:part-5

Related Entities

isq:QuantityShape isq:part-5 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry