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Statements (25)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
dimensionless number
|
| gptkbp:appliesTo |
gases
liquids |
| gptkbp:category |
dimensionless numbers of fluid mechanics
|
| gptkbp:component |
dynamic viscosity (μ)
kinematic viscosity (ν) specific heat at constant pressure (c_p) thermal conductivity (k) thermal diffusivity (α) |
| gptkbp:describes |
ratio of momentum diffusivity to thermal diffusivity
|
| gptkbp:form |
Pr = (μ c_p)/k
Pr = ν/α |
| https://www.w3.org/2000/01/rdf-schema#label |
Prandtl number
|
| gptkbp:measures |
dimensionless
|
| gptkbp:namedAfter |
gptkb:Ludwig_Prandtl
|
| gptkbp:relatedTo |
gptkb:Schmidt_number
gptkb:Nusselt_number gptkb:Reynolds_number |
| gptkbp:symbol |
Pr
|
| gptkbp:typical_value_for_air_at_20°C |
~0.71
|
| gptkbp:typical_value_for_water_at_20°C |
~7
|
| gptkbp:usedIn |
fluid dynamics
heat transfer |
| gptkbp:bfsParent |
gptkb:Lewis_number
|
| gptkbp:bfsLayer |
4
|