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11-5.19

Boltzmann number

URNurn:iso:std:iso:80000:-11:ed-2:en:item:11-5.19
Download RDF.jsonld.ttl
https://metanorma.github.io/isq-smart/quantities/part-11/t11-5.19
urn:iso:std:iso:80000:-11:ed-2:en:item:11-5.19
ISQ Identifiers
ISO
urn:iso:std:iso:80000:-11:ed-2:en:item:11-5.19
IEC
urn:iec:std:iec:80000-11:2019:::item:11-5.19
Designations
ENBoltzmann number
FRnombre de Boltzmann
Symbol
B z
B o l
B o
Notation systems
Rendered
B z
Rendered
B o l
Rendered
B o
AsciiMath
Bz
AsciiMath
Bol
AsciiMath
Bo
LaTeX
B z
LaTeX
B o l
LaTeX
B o

Definition

EN

relation between convective heat and radiant heat for a fluid in a channel, expressed by

B z = ρ v c p / ( ε σ T 3 ) ; where

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

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

c p :: is specific heat capacity at constant pressure (ISO 80000-5: Thermodynamics),

ε :: is emissivity (ISO 80000-7: Light),

σ :: is the Stefan-Boltzmann constant (ISO 80000-7: Light), and

T :: is thermodynamic temperature (ISO 80000-5: Thermodynamics)

FR

relation entre la chaleur par convection et la chaleur par rayonnement pour un fluide dans un conduit, exprimée par:

B z = ρ v c p / ( ε σ T 3 ) ; où

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

v :: est la vitesse caractéristique (ISO 80000-3: Space and time) du fluide;

c p :: est la capacité thermique massique à pression constante (ISO 80000-5: Thermodynamics);

ε :: est l'émissivité (ISO 80000-7: Light);

σ :: est la constante de Stefan-Boltzmann (ISO 80000-7: Light); et

T :: est la température thermodynamique (ISO 80000-5: Thermodynamics)

0
Concept HierarchyPendrill (2024)
1dimensionless quantitiesLevel 0 · Kind

Ontology
isq:Quantitysmart:TermEntry

Class Hierarchy

smart:Entitysmart:TermEntryisq:Quantity

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

Instance IRI

isq:t11-5.19

Properties

isq:QuantityShape
PropertyValue
rdf:type
isq:Quantitysmart:TermEntry
dcterms:identifier
11-5.19
skosxl:prefLabel
"Boltzmann number"@en
skosxl:altLabel
"Bz"@en"Bol"@en"Bo"@en
skos:definition
relation between convective heat and radiant heat for a fluid in a channel, expressed by stem:[Bz = rho v c_p // (epsil…
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