Part 11: Characteristic Numbers·115 entries

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Section 11-442 entries

11-4.1Reynolds number 11-4.2Euler number 11-4.3Froude number 11-4.4Grashof number 11-4.5Weber number 11-4.6Mach number 11-4.7Knudsen number 11-4.8Strouhal number, Thomson number 11-4.9drag coefficient 11-4.10Bagnold number 11-4.11Bagnold number <solid particles>11-4.12lift coefficient 11-4.13thrust coefficient 11-4.14Dean number 11-4.15Bejan number 11-4.16Lagrange number 11-4.17Bingham number, plasticity number 11-4.18Hedström number 11-4.19Bodenstein number 11-4.20Rossby number, Kiebel number 11-4.21Ekman number 11-4.22elasticity number 11-4.23Darcy friction factor, Moody friction factor 11-4.24Fanning number 11-4.25Goertler number, Goertler parameter 11-4.26Hagen number 11-4.27Laval number 11-4.28Poiseuille number 11-4.29power number 11-4.30Richardson number 11-4.31Reech number 11-4.32Stokes number <time-related>11-4.33Stokes number <vibrating particles>11-4.34Stokes number <rotameter>, power coefficient <rotameter>11-4.35Stokes number <gravity>11-4.36Stokes number <drag>11-4.37Laplace number, Suratman number 11-4.38Blake number 11-4.39Sommerfeld number 11-4.40Taylor number <momentum transfer>11-4.41Galilei number 11-4.42Womersley number

11-4.2

Euler number

URNurn:iso:std:iso:80000:-11:ed-2:en:item:11-4.2

Download RDF.jsonld .ttl

https://metanorma.github.io/isq-smart/quantities/part-11/t11-4.2
urn:iso:std:iso:80000:-11:ed-2:en:item:11-4.2

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-11:ed-2:en:item:11-4.2

IEC

urn:iec:std:iec:80000-11:2019:::item:11-4.2

Designations

ENEuler number

FRnombre d'Euler

Symbol

E u

Notation systems

Rendered

E u

AsciiMath

Eu

LaTeX

E u

Definition

relationship between pressure drop in a flow and the kinetic energy per volume for flow of fluids in a pipe, expressed by

$E u = \frac{Δ p}{ρ v^{2}}$ ; where

$Δ p$ :: is drop of pressure (ISO 80000-4: Mechanics),

$ρ$ :: is mass density (ISO 80000-4: Mechanics), and

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

relation entre la chute de pression dans un écoulement et l'énergie cinétique par volume dans le contexte de l'écoulement de fluides dans un tube, exprimée par:

$E u = \frac{Δ p}{ρ v^{2}}$ ; où

$Δ p$ :: est la chute de pression (ISO 80000-4: Mechanics);

$ρ$ :: est la masse volumique (ISO 80000-4: Mechanics); et

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

Notes

The Euler number is used to characterize losses in the flow.

A modification of the Euler number is considering the dimensions of the containment (pipe):

$E u' = \frac{d}{l} E u$ ; where

$d$ :: is inner diameter (ISO 80000-3: Space and time) of the pipe, and

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

Le nombre d'Euler est utilisé pour caractériser les pertes lors de l'écoulement.

Une modification du nombre d'Euler prend en compte les dimensions du contenant (tube):

$E u' = \frac{d}{l} E u$ ; où

$d$ :: est le diamètre intérieur (ISO 80000-3: Space and time) du tube; et

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

Referenced by

Lagrange 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:t11-4.2

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	11-4.2
skosxl:prefLabel	"Euler number"@en
skosxl:altLabel	"Eu"@en
skos:definition	relationship between pressure drop in a flow and the kinetic energy per volume for flow of fluids in a pipe, expressed b…
skos:note	The Euler number is used to characterize losses in the flow. A modification of the Euler number is considering the dime…
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