Part 11: Characteristic Numbers·115 entries

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11-5.1

Fourier number

URNurn:iso:std:iso:80000:-11:ed-2:en:item:11-5.1

https://metanorma.github.io/isq-smart/quantities/part-11/t11-5.1
urn:iso:std:iso:80000:-11:ed-2:en:item:11-5.1

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-11:ed-2:en:item:11-5.1

IEC

urn:iec:std:iec:80000-11:2019:::item:11-5.1

Designations

ENFourier number

FRnombre de Fourier

Symbol

F o

Notation systems

Rendered

F o

AsciiMath

Fo

LaTeX

F o

Definition

relation between heat conduction rate and the rate of thermal energy storage in a body for conductive heat transfer into a body, expressed by

$F o = \frac{α t}{l^{2}}$ ; where

$α$ :: is thermal diffusivity (ISO 80000-5: Thermodynamics),

$t$ :: is time (ISO 80000-3: Space and time), and

$l$ :: is characteristic length (ISO 80000-3: Space and time)

relation entre la vitesse de conduction de la chaleur et la vitesse de stockage de l'énergie thermique dans un corps dans le contexte du transfert de chaleur par conduction dans un corps, exprimée par:

$F o = \frac{α t}{l^{2}}$ ; où

$α$ :: est la diffusivité thermique (ISO 80000-5: Thermodynamics);

$t$ :: est le temps (ISO 80000-3: Space and time); et

$l$ :: est la longueur caractéristique (ISO 80000-3: Space and time)

Notes

The characteristic length $l$ of the body is often defined as the quotient of the body's volume and its heated surface.

Sometimes the reciprocal of this number is wrongly used.

La longueur caractéristique $l$ du corps est souvent définie comme le quotient du volume du corps par sa surface chauffée.

Parfois, l'inverse de ce nombre est utilisé à tort.

Referenced by

Fourier number <mass transfer>

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:t11-5.1

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	11-5.1
skosxl:prefLabel	"Fourier number <heat transfer>"@en
skosxl:altLabel	"Fo"@en
skos:definition	relation between heat conduction rate and the rate of thermal energy storage in a body for conductive heat transfer into…
skos:note	The characteristic length stem:[l] of the body is often defined as the quotient of the body's volume and its heated surf…
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