ISQ
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11-4.11

Bagnold number

URNurn:iso:std:iso:80000:-11:ed-2:en:item:11-4.11
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urn:iso:std:iso:80000:-11:ed-2:en:item:11-4.11
ISQ Identifiers
ISO
urn:iso:std:iso:80000:-11:ed-2:en:item:11-4.11
IEC
urn:iec:std:iec:80000-11:2019:::item:11-4.11
Designations
ENBagnold number
FRnombre de Bagnold
Symbol
B a 2
Notation systems
Rendered
B a 2
AsciiMath
Ba_2
LaTeX
B a_{2}

Definition

EN

quotient of drag force and viscous force in a fluid transferring solid particles, expressed by

B a 2 = ρ s d 2 γ . η 1 / ( f s 1 / 2 − 1 ) ; where

ρ s :: is mass density (ISO 80000-4: Mechanics) of particles,

d :: is diameter (ISO 80000-3: Space and time) of particles,

γ . = v / d :: is shear rate time-derivative of shear strain (ISO 80000-4: Mechanics),

η :: is dynamic viscosity (ISO 80000-4: Mechanics) of fluid, and

f s :: is volumic fraction of solid particles

FR

quotient de la traînée par la force visqueuse dans un fluide transférant des particules solides, exprimé par:

B a 2 = ρ s d 2 γ . η 1 / ( f s 1 / 2 − 1 ) ; où

ρ s :: est la masse volumique (ISO 80000-4: Mechanics) des particules;

d :: est le diamètre (ISO 80000-3: Space and time) des particules;

γ . = v / d :: est la vitesse de cisaillement, dérivée dans le temps du glissement unitaire (ISO 80000-4: Mechanics);

η :: est la viscosité dynamique (ISO 80000-4: Mechanics) du fluide; et

f s :: est la fraction volumique de particules solides

0
Concept HierarchyPendrill (2024)
1dimensionless quantitiesLevel 0 · Kind

Ontology

Class Hierarchy

A physical quantity as defined in ISO/IEC 80000, with associated symbols, definitions, and units of measurement.

Instance IRI

isq:t11-4.11
PropertyValue
rdf:type
dcterms:identifier
11-4.11
skosxl:prefLabel
"Bagnold number <solid particles>"@en
skosxl:altLabel
"Ba_2"@en
skos:definition
quotient of drag force and viscous force in a fluid transferring solid particles, expressed by stem:[Ba_2 = (rho_"s" d^…
isq:hasDimension
smart:hasBindingnessType
dcterms:isPartOf