Kármán vortex street
E483172
Kármán vortex street is a repeating pattern of swirling vortices formed when a fluid flows past a bluff body, fundamental in fluid dynamics and aerodynamics.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Kármán vortex street canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4966354 — 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: Kármán vortex street Context triple: [Theodore von Kármán, knownFor, Kármán vortex street]
-
A.
Langmuir circulation
Langmuir circulation is a wind-driven pattern of shallow, counter-rotating vortices in the upper ocean that organizes floating material into parallel streaks on the water surface.
-
B.
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.
-
C.
Saffman
Saffman is a surname most notably associated with Philip G. Saffman, a prominent British-American applied mathematician and fluid dynamicist.
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D.
Ekman layer
The Ekman layer is the thin region of fluid near a boundary (such as the ocean surface or seafloor) where the balance between friction and the Coriolis effect causes the flow to spiral with depth.
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E.
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.
- 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: Kármán vortex street Target entity description: Kármán vortex street is a repeating pattern of swirling vortices formed when a fluid flows past a bluff body, fundamental in fluid dynamics and aerodynamics.
-
A.
Langmuir circulation
Langmuir circulation is a wind-driven pattern of shallow, counter-rotating vortices in the upper ocean that organizes floating material into parallel streaks on the water surface.
-
B.
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.
-
C.
Saffman
Saffman is a surname most notably associated with Philip G. Saffman, a prominent British-American applied mathematician and fluid dynamicist.
-
D.
Ekman layer
The Ekman layer is the thin region of fluid near a boundary (such as the ocean surface or seafloor) where the balance between friction and the Coriolis effect causes the flow to spiral with depth.
-
E.
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.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
fluid dynamics phenomenon
ⓘ
vortex shedding pattern ⓘ |
| appliesTo |
aircraft landing gear
ⓘ
bridge cables ⓘ chimneys ⓘ circular cylinders in crossflow ⓘ offshore risers ⓘ tall buildings ⓘ |
| dependsOn |
Reynolds number
NERFINISHED
ⓘ
characteristic length of the body ⓘ flow velocity ⓘ fluid viscosity ⓘ shape of the bluff body ⓘ |
| describedBy | Strouhal number NERFINISHED ⓘ |
| field |
aerodynamics
ⓘ
fluid dynamics ⓘ |
| governedBy |
Navier–Stokes equations
NERFINISHED
ⓘ
hydrodynamic stability theory ⓘ |
| hasApplication |
aeroelastic analysis
ⓘ
design of bridge decks and cables ⓘ design of chimneys and stacks ⓘ flow measurement using vortex flowmeters ⓘ noise prediction and control in external flows ⓘ offshore structure design ⓘ vibration control in engineering structures ⓘ |
| hasCause |
flow of fluid past a bluff body
ⓘ
instability in the wake of an obstacle ⓘ |
| hasCharacteristic |
alternating vortices
ⓘ
associated with vortex-induced vibrations ⓘ can cause structural vibrations ⓘ can induce oscillating forces on bodies ⓘ occurs behind bluff bodies ⓘ periodic vortex shedding ⓘ repeating pattern of swirling vortices ⓘ unsteady wake flow ⓘ |
| hasTemporalProperty | vortex shedding frequency proportional to flow speed ⓘ |
| namedAfter | Theodore von Kármán NERFINISHED ⓘ |
| observedIn |
atmospheric flows
ⓘ
cloud patterns downstream of islands ⓘ laboratory water channels ⓘ ocean currents ⓘ wind tunnel experiments ⓘ |
| occursIn |
laminar flow regime
ⓘ
subcritical Reynolds number range ⓘ |
| produces |
drag force fluctuations
ⓘ
lift force oscillations ⓘ |
| relatedTo |
boundary layer separation
ⓘ
von Kármán instability ⓘ vortex shedding ⓘ vortex-induced vibration ⓘ wake flow ⓘ |
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: Kármán vortex street Description of subject: Kármán vortex street is a repeating pattern of swirling vortices formed when a fluid flows past a bluff body, fundamental in fluid dynamics and aerodynamics.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.