Hele–Shaw cell
E647519
A Hele–Shaw cell is a narrow, fluid-filled gap between two closely spaced plates used to study two-dimensional viscous flow and pattern-forming instabilities in fluid dynamics.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Hele–Shaw cell canonical | 1 |
| Hele–Shaw experiments | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7189103 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Hele–Shaw cell Context triple: [Saffman–Taylor instability, occursIn, Hele–Shaw cell]
-
A.
Saffman–Taylor instability
The Saffman–Taylor instability is a fluid dynamics phenomenon in which a less viscous fluid penetrating a more viscous one in a confined geometry leads to finger-like interfacial patterns, often called viscous fingering.
-
B.
Taylor–Couette flow
Taylor–Couette flow is the fluid motion that arises between two concentric, independently rotating cylinders, notable for its rich pattern of instabilities and vortical structures that are fundamental in fluid dynamics research.
-
C.
Rayleigh–Bénard convection
Rayleigh–Bénard convection is a fluid dynamics phenomenon in which a horizontal fluid layer heated from below develops organized convection cells due to buoyancy-driven instability.
-
D.
Callahan flow
Callahan flow is a notable basaltic lava flow associated with Medicine Lake Volcano in northern California, formed during one of its relatively recent volcanic eruptions.
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E.
Stokes flow
Stokes flow is a type of fluid motion dominated by viscous forces and characterized by very low Reynolds numbers, where inertial effects are negligible.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Hele–Shaw cell Target entity description: A Hele–Shaw cell is a narrow, fluid-filled gap between two closely spaced plates used to study two-dimensional viscous flow and pattern-forming instabilities in fluid dynamics.
-
A.
Saffman–Taylor instability
The Saffman–Taylor instability is a fluid dynamics phenomenon in which a less viscous fluid penetrating a more viscous one in a confined geometry leads to finger-like interfacial patterns, often called viscous fingering.
-
B.
Taylor–Couette flow
Taylor–Couette flow is the fluid motion that arises between two concentric, independently rotating cylinders, notable for its rich pattern of instabilities and vortical structures that are fundamental in fluid dynamics research.
-
C.
Rayleigh–Bénard convection
Rayleigh–Bénard convection is a fluid dynamics phenomenon in which a horizontal fluid layer heated from below develops organized convection cells due to buoyancy-driven instability.
-
D.
Callahan flow
Callahan flow is a notable basaltic lava flow associated with Medicine Lake Volcano in northern California, formed during one of its relatively recent volcanic eruptions.
-
E.
Stokes flow
Stokes flow is a type of fluid motion dominated by viscous forces and characterized by very low Reynolds numbers, where inertial effects are negligible.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
experimental apparatus
ⓘ
fluid dynamics experiment ⓘ porous media flow analogue ⓘ |
| approximates | Darcy flow in porous media ⓘ |
| characterizedBy |
quasi-two-dimensional flow
ⓘ
small plate separation ⓘ |
| enablesStudyOf |
Laplacian growth processes
ⓘ
Saffman–Taylor instability ⓘ capillary effects in confined geometries ⓘ interfacial instabilities ⓘ pattern-forming instabilities ⓘ viscous fingering patterns ⓘ |
| filledWith | viscous fluid ⓘ |
| geometry | two closely spaced plates ⓘ |
| governedBy |
Darcy’s law analogue
ⓘ
lubrication approximation ⓘ |
| hasParameter |
fluid viscosity
ⓘ
gap thickness ⓘ injection rate ⓘ surface tension between fluids ⓘ |
| hasPart |
inlet for fluid injection
ⓘ
narrow gap ⓘ outlet for fluid withdrawal ⓘ two parallel plates ⓘ |
| models |
flow in porous media
ⓘ
immiscible fluid displacement ⓘ |
| namedAfter | Henry Selby Hele-Shaw ⓘ |
| relatedTo |
Laplacian growth
ⓘ
linked to:
Saffman–Taylor instability
Saffman–Taylor instability ⓘ porous medium equation ⓘ viscous fingering ⓘ |
| typicalFlowRegime | low Reynolds number ⓘ |
| typicalPlateMaterial |
acrylic
ⓘ
glass ⓘ |
| usedFor |
benchmarking numerical simulations of two-phase flow
ⓘ
studying displacement of one fluid by another ⓘ studying effects of surface tension ⓘ studying effects of viscosity contrast ⓘ visualization of viscous flow ⓘ |
| usedIn |
Saffman–Taylor instability studies
ⓘ
fluid dynamics ⓘ
linked to:
Fluid Mechanics
geophysical flow analog experiments ⓘ hydrodynamics ⓘ laboratory teaching of fluid mechanics ⓘ pattern formation studies ⓘ research on multiphase flow ⓘ two-dimensional flow visualization ⓘ viscous fingering experiments ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Hele–Shaw cell Description of subject: A Hele–Shaw cell is a narrow, fluid-filled gap between two closely spaced plates used to study two-dimensional viscous flow and pattern-forming instabilities in fluid dynamics.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Hele–Shaw cell