Part 11: Characteristic Numbers·115 entries

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Section 11-710 entries

11-7.1Prandtl number 11-7.2Schmidt number, DEPRECATED: Colburn number 11-7.3Lewis number 11-7.4Ohnesorge number 11-7.5Cauchy number, aeroelasticity parameter 11-7.6Hooke number 11-7.7Weissenberg number 11-7.8Deborah number 11-7.9Lorentz number 11-7.10compressibility number

11-7.8

Deborah number

URNurn:iso:std:iso:80000:-11:ed-2:en:item:11-7.8

Download RDF.jsonld .ttl

https://metanorma.github.io/isq-smart/quantities/part-11/t11-7.8
urn:iso:std:iso:80000:-11:ed-2:en:item:11-7.8

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-11:ed-2:en:item:11-7.8

IEC

urn:iec:std:iec:80000-11:2019:::item:11-7.8

Designations

ENDeborah number

FRnombre de Deborah

Symbol

D e

Notation systems

Rendered

D e

AsciiMath

De

LaTeX

D e

Definition

quotient of relaxation time of viscoelastic fluids and observation duration in rheology of viscoelastic fluids, expressed by

$D e = t_{c} / t_{p}$ ; where

$t_{c}$ :: is stress relaxation time, and

$t_{p}$ :: is observation duration (ISO 80000-3: Space and time)

quotient du temps de relaxation des contraintes dans les fluides viscoélastiques par la durée d'observation en rhéologie des fluides viscoélastiques, exprimé par:

$D e = t_{c} / t_{p}$ ; où

$t_{c}$ :: est le temps de relaxation des contraintes; et

$t_{p}$ :: est la durée (ISO 80000-3: Space and time) d'observation

Notes

The stress relaxation time is sometimes called the Maxwell relaxation time.

Le temps de relaxation des contraintes est parfois appelé temps de relaxation de Maxwell.

Referenced by

elasticity 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:t11-7.8

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	11-7.8
skosxl:prefLabel	"Deborah number"@en
skosxl:altLabel	"De"@en
skos:definition	quotient of relaxation time of viscoelastic fluids and observation duration in rheology of viscoelastic fluids, expresse…
skos:note	The stress relaxation time is sometimes called the Maxwell relaxation time.
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