Part 11: Characteristic Numbers·115 entries

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11-8.12

Stuart number

URNurn:iso:std:iso:80000:-11:ed-2:en:item:11-8.12

https://metanorma.github.io/isq-smart/quantities/part-11/t11-8.12
urn:iso:std:iso:80000:-11:ed-2:en:item:11-8.12

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-11:ed-2:en:item:11-8.12

IEC

urn:iec:std:iec:80000-11:2019:::item:11-8.12

Designations

ENStuart number

FRnombre de Stuart

Symbol

S t w

Notation systems

Rendered

S t w

AsciiMath

Stw

LaTeX

S t w

Definition

quotient of magnetic forces and inertia forces in an electrically conducting liquid, expressed by

$S t w = B^{2} l σ / (v ρ)$ ; where

$B$ :: is magnetic flux density (IEC 80000-6: Electromagnetism),

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

$σ$ :: is electrical conductivity (IEC 80000-6: Electromagnetism),

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

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

quotient des forces magnétiques par les forces d'inertie dans un liquide conducteur de courant électrique, exprimé par

$S t w = B^{2} l σ / (v ρ)$ ; où

$B$ :: est l'induction magnétique (IEC 80000-6: Electromagnetism),

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

$σ$ :: est la conductivité électrique (IEC 80000-6: Electromagnetism),

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

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

Notes

The Stuart number sometimes is called magnetic force parameter.

Sometimes the square root is wrongly used.

The Stuart number is also given by

$S t w = H a^{2} / R e$ ; where

$H a$ :: is the Hartmann number, and

$R e$ :: is the Reynolds number.

Le nombre de Stuart est parfois appelé paramètre de force magnétique.

Parfois, la racine carrée est utilisée à tort.

Le nombre de Stuart est également donné par

$S t w = H a^{2} / R e$ ; où

$H a$ :: est le nombre de Hartmann, et

$R e$ :: est le nombre de Reynolds.

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:t11-8.12

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	11-8.12
skosxl:prefLabel	"Stuart number"@en
skosxl:altLabel	"Stw"@en
skos:definition	quotient of magnetic forces and inertia forces in an electrically conducting liquid, expressed by stem:[Stw = B^2 l sig…
skos:note	The Stuart number sometimes is called magnetic force parameter. Sometimes the square root is wrongly used. The Stuart …
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