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Viscosity

In continuum mechanics, viscosity is a property of a fluid that quantifies the resistance force acting on fluids when there is relative motion between fluid parcels. This resistance force is caused by the stress in fluid parcels, which ideally is directly proportional to the strain rate (the time derivative of strain) that arises when fluid parcels are…

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Common symbols
η, μ
Derivations from other quantities
μ = G·t
Dimension
M L − 1 T − 1 {\displaystyle {\mathsf {M}}{\mathsf {L}}^{-1}{\mathsf {T}}^{-1}}

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Overview

Etymology

Definitions

Momentum transport

Newtonian and non-Newtonian fluids

In solids

Measurement

Units

Molecular origins

Prediction

Selected substances

Advanced semantic analysis

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Map overview Semantic statistics

Viscosity

Nodes210
Edges209
Triples135
Avg. degree1.99
Density0.009524
Components1

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Viscosity

Top relations

related to Newtonian and non-Newtonian fluids · 15
Viscosity → Bingham, Fick's, For, Gases, Hooke's, However, Its, Newton's, Newtonian, Ohm's, Rheopectic, Shear-thickening, Shear-thinning, Such, Thixotropic
related to Units · 13
Viscosity → ASTM, CGS, In, It, Jean Léonard Marie Poiseuille, Pa, Pl, SI, Sir George Gabriel Stokes, St, The, The CGS, The SI
related to External links · 11
Viscosity → Air, Characteristics, Characteristics Chart, Dynamic, Dynamics Toolbox, Engineers Edge, Kinematic, PhysicsFluid, The Feynman Lectures, Viscosity Measurement, Water
is a · 8
Viscosity → calculation derived from tests performed on drilling fluid used in oil or gas well development, glass capillary viscometer.In coating industries, linear combination of the shear and bulk viscosities that describes the reaction of a solid elastic material to elongation, material property which characterizes momentum transport within a fluid, material property which relates the viscous stresses in a material to the rate of change of a deformation, newton-second per metre squared, property of a fluid that quantifies the resistance force acting on fluids when there is relative motion between fluid parcels, stokes
related to Momentum transport · 8
Viscosity → Just, Newton's, Per Newton's, The, These, This, Thus, Transport
related to Dynamic viscosity · 7
Viscosity → Although, Couette, For, Hooke's, In, Stresses, These
related to General definition · 7
Viscosity → As, For Newtonian, However, If, In, In Cartesian, Since
related to In solids · 7
Viscosity → Conversely, For, However, James Clerk Maxwell, Such, The, While
related to Molecular origins · 7
Viscosity → Above, Because, For, In, Kostya Trachenko, Momentum, Vadim Brazhkin
related to Air · 6
Viscosity → Among, Except, For, Pa, Temperature, Under

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Important terminology

displaystyle temperature fluid mu fluids liquids molecular gases force time water shear pressure gas viscous flow rate also used text

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
ViscosityCommon symbolsη, μ1.00infobox
ViscosityDerivations from other quantitiesμ = G·t1.00infobox
ViscosityDimensionM L − 1 T − 1 {\displaystyle {\mathsf {M}}{\mathsf {L}}^{-1}{\mathsf {T}}^{-1}}1.00infobox
Viscositycausesa greater loss of energy0.90text
Viscosityis aproperty of a fluid that quantifies the resistance force acting on fluids when there is relative motion between fluid parcels0.90text
Viscosityis amaterial property which relates the viscous stresses in a material to the rate of change of a deformation0.90text
Viscosityis amaterial property which characterizes momentum transport within a fluid0.90text
Viscosityis alinear combination of the shear and bulk viscosities that describes the reaction of a solid elastic material to elongation0.90text
Viscosityis aglass capillary viscometer.In coating industries0.90text
Viscosityis acalculation derived from tests performed on drilling fluid used in oil or gas well development0.90text
Viscosityis anewton-second per metre squared0.90text
Viscosityis astokes0.90text

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