Part 11: Characteristic Numbers·115 entries

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11-5.2

Péclet number

URNurn:iso:std:iso:80000:-11:ed-2:en:item:11-5.2

https://metanorma.github.io/isq-smart/quantities/part-11/t11-5.2
urn:iso:std:iso:80000:-11:ed-2:en:item:11-5.2

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-11:ed-2:en:item:11-5.2

IEC

urn:iec:std:iec:80000-11:2019:::item:11-5.2

Designations

ENPéclet number

FRnombre de Péclet

Symbol

P e

Notation systems

Rendered

P e

AsciiMath

Pe

LaTeX

P e

Definition

relation between convective heat transfer rate and conductive heat transfer rate, expressed by

$P e = v l / α$ ; where

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

$l$ :: is length (ISO 80000-3: Space and time) in the direction of heat transfer, and

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

relation entre le débit de transfert de chaleur par convection et le débit de transfert de chaleur par conduction, exprimée par:

$P e = v l / α$ ; où

$v$ :: est la vitesse (ISO 80000-3: Space and time);

$l$ :: est la longueur (ISO 80000-3: Space and time) dans la direction du transfert de chaleur; et

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

Notes

The thermal Péclet number is also given by

$P e = R e \cdot P r$ ; where

$R e$ :: is the Reynolds number (Reynolds number), and

$P r$ :: is the Prandtl number (Prandtl number).

Compare with Péclet number <mass transfer>, Péclet number for mass transfer.

Le nombre de Péclet thermique est également donné par:

$P e = R e \cdot P r$ ; où

$R e$ :: est le nombre de Reynolds (Reynolds number); et

$P r$ :: est le nombre de Prandtl (Prandtl number).

Comparer avec Péclet number <mass transfer>, nombre de Péclet pour transfert de masse.

Referenced by

Stanton number <heat transfer>Péclet number <mass transfer>Prandtl number Lewis number

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:t11-5.2

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	11-5.2
skosxl:prefLabel	"Péclet number <heat transfer>"@en
skosxl:altLabel	"Pe"@en
skos:definition	relation between convective heat transfer rate and conductive heat transfer rate, expressed by stem:[Pe = vl//alpha]; w…
skos:note	The thermal Péclet number is also given by stem:[Pe = Re * Pr]; where stem:[Re]:: is the Reynolds number (<<t11-4.1>>)…
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