Part 11: Characteristic Numbers·115 entries

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11-5.15

Eckert number, Dulong number

URNurn:iso:std:iso:80000:-11:ed-2:en:item:11-5.15

https://metanorma.github.io/isq-smart/quantities/part-11/t11-5.15
urn:iso:std:iso:80000:-11:ed-2:en:item:11-5.15

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-11:ed-2:en:item:11-5.15

IEC

urn:iec:std:iec:80000-11:2019:::item:11-5.15

Designations

ENEckert number

FRnombre d'Eckert

ENDulong number

FRnombre de Dulong

Symbol

E c

Notation systems

Rendered

E c

AsciiMath

Ec

LaTeX

E c

Definition

relation between the kinetic energy of a flow and its enthalpy change in fluid dynamics exhibiting dissipation, expressed by

$E c = v^{2} / (c_{p} Δ T)$ ; where

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

$c_{p}$ :: is specific heat capacity at constant pressure (ISO 80000-5: Thermodynamics) of the flow, and

$Δ T$ :: is difference of thermodynamic temperature $T$ (ISO 80000-5: Thermodynamics) due to dissipation (by friction)

relation entre l'énergie cinétique d'un flux et sa variation d'enthalpie dans le contexte de la dynamique des fluides présentant une dissipation, exprimée par:

$E c = v^{2} / (c_{p} Δ T)$ ; où

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

$c_{p}$ :: est la capacité thermique massique à pression constante (ISO 80000-5: Thermodynamics) de l'écoulement; et

$Δ T$ :: est la différence de température thermodynamique $T$ (ISO 80000-5: Thermodynamics) due à la dissipation (par frottement)

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:t11-5.15

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	11-5.15
skosxl:prefLabel	"Eckert number"@en
skosxl:altLabel	"Dulong number"@en"Ec"@en
skos:definition	relation between the kinetic energy of a flow and its enthalpy change in fluid dynamics exhibiting dissipation, expresse…
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