Part 11: Characteristic Numbers·115 entries

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11-8.1

Reynolds magnetic number

URNurn:iso:std:iso:80000:-11:ed-2:en:item:11-8.1

https://metanorma.github.io/isq-smart/quantities/part-11/t11-8.1
urn:iso:std:iso:80000:-11:ed-2:en:item:11-8.1

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-11:ed-2:en:item:11-8.1

IEC

urn:iec:std:iec:80000-11:2019:::item:11-8.1

Designations

ENReynolds magnetic number

FRnombre de Reynolds magnétique

Symbol

R m

Notation systems

Rendered

R m

AsciiMath

Rm

LaTeX

R m

Definition

relation between inertial force and magneto-dynamic viscous force in an electrically conducting fluid, expressed by

$R m = v l μ σ = v l / v_{m}$ ; where

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

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

$μ$ :: is magnetic permeability (IEC 80000-6: Electromagnetism),

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

$v_{m} = 1 / (μ σ)$ :: is magnetic viscosity (magnetic diffusivity)

relation entre la force d'inertie et la force visqueuse magnétodynamique dans un fluide conducteur de courant électrique, exprimée par

$R m = v l μ σ = v l / v_{m}$ ; où

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

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

$μ$ :: est la perméabilité magnétique (IEC 80000-6: Electromagnetism),

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

$v_{m} = 1 / (μ σ)$ :: est la viscosité magnétique (diffusivité magnétique)

Notes

This number is also called magnetic Reynolds number.

The Reynolds magnetic number is also given by

$R m = R e \cdot P r_{m}$ ; where

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

$P r_{m}$ :: is the Prandtl magnetic number (Prandtl magnetic number).

Ce nombre est aussi appelé nombre magnétique de Reynolds.

Le nombre de Reynolds magnétique est également donné par

$R m = R e \cdot P r_{m}$ ; où

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

$P r_{m}$ :: est le nombre de Prandtl magnétique (Prandtl magnetic number).

Referenced by

Cowling number <magnetism>Prandtl magnetic number Lundquist 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:t11-8.1

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	11-8.1
skosxl:prefLabel	"Reynolds magnetic number"@en
skosxl:altLabel	"Rm"@en
skos:definition	relation between inertial force and magneto-dynamic viscous force in an electrically conducting fluid, expressed by ste…
skos:note	This number is also called magnetic Reynolds number. The Reynolds magnetic number is also given by stem:[Rm = Re * Pr_…
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