Statements (26)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
physical phenomenon
|
| gptkbp:alsoKnownAs |
gptkb:Hagen–Poiseuille_equation
|
| gptkbp:appliesTo |
Newtonian fluids
cylindrical pipes |
| gptkbp:describes |
laminar flow of incompressible fluids in a pipe
|
| gptkbp:field |
fluid dynamics
|
| gptkbp:form |
Q = (π ΔP r^4) / (8 η l)
|
| https://www.w3.org/2000/01/rdf-schema#label |
Poiseuille's law
|
| gptkbp:limitation |
assumes incompressible fluid
assumes rigid, straight pipe assumes steady flow not valid for turbulent flow valid only for laminar flow |
| gptkbp:namedAfter |
gptkb:Jean_Léonard_Marie_Poiseuille
|
| gptkbp:usedIn |
gptkb:medicine
biology engineering hydraulics |
| gptkbp:variant |
η (dynamic viscosity)
ΔP (pressure difference) Q (volumetric flow rate) l (length of pipe) r (radius of pipe) |
| gptkbp:yearProposed |
1840
|
| gptkbp:bfsParent |
gptkb:Physics
|
| gptkbp:bfsLayer |
4
|