Venturi effect
E1014091
The Venturi effect is a fluid dynamics phenomenon in which a fluid's pressure decreases and its velocity increases as it flows through a constricted section of pipe or channel.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Venturi effect canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12957746 — 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: Venturi effect Context triple: [Giovanni Battista Venturi, notableFor, Venturi effect]
-
A.
Bernoulli equation
The Bernoulli equation is a fundamental principle in fluid dynamics that relates pressure, velocity, and elevation in steady, incompressible, inviscid flow along a streamline.
-
B.
Venturi
Venturi is an Italian surname most prominently associated with architect Robert Venturi, a key figure in postmodern architecture.
-
C.
Reynolds number
The Reynolds number is a dimensionless quantity in fluid mechanics that characterizes the flow regime of a fluid, indicating whether it is laminar or turbulent based on the ratio of inertial to viscous forces.
-
D.
Pascal's law
Pascal's law is a fundamental principle of fluid mechanics stating that pressure applied to an enclosed fluid is transmitted undiminished in all directions throughout the fluid and to the walls of its container.
-
E.
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.
- 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: Venturi effect Target entity description: The Venturi effect is a fluid dynamics phenomenon in which a fluid's pressure decreases and its velocity increases as it flows through a constricted section of pipe or channel.
-
A.
Bernoulli equation
The Bernoulli equation is a fundamental principle in fluid dynamics that relates pressure, velocity, and elevation in steady, incompressible, inviscid flow along a streamline.
-
B.
Venturi
Venturi is an Italian surname most prominently associated with architect Robert Venturi, a key figure in postmodern architecture.
-
C.
Reynolds number
The Reynolds number is a dimensionless quantity in fluid mechanics that characterizes the flow regime of a fluid, indicating whether it is laminar or turbulent based on the ratio of inertial to viscous forces.
-
D.
Pascal's law
Pascal's law is a fundamental principle of fluid mechanics stating that pressure applied to an enclosed fluid is transmitted undiminished in all directions throughout the fluid and to the walls of its container.
-
E.
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.
- F. None of above. chosen
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
fluid dynamics phenomenon
ⓘ
physical effect ⓘ |
| appliesTo |
gases
ⓘ
liquids ⓘ single-phase flow ⓘ |
| assumes |
non-viscous flow in idealized form
ⓘ
steady flow for basic derivation ⓘ |
| basedOn | Bernoulli principle NERFINISHED ⓘ |
| canBeObservedIn |
airflow through building openings
ⓘ
natural flows in river narrows ⓘ wind tunnels with constricted test sections ⓘ |
| cause | conversion of fluid pressure energy into kinetic energy ⓘ |
| consequence |
local drop in static pressure at the throat of a constriction
ⓘ
potential for cavitation if pressure falls below vapor pressure ⓘ |
| describes |
pressure decrease in a fluid flowing through a constriction
ⓘ
velocity increase in a fluid flowing through a constriction ⓘ |
| field |
fluid dynamics
ⓘ
hydrodynamics ⓘ |
| hasComponent |
downstream diffuser section
ⓘ
throat ⓘ upstream section ⓘ |
| implies | static pressure is lower where flow speed is higher in a constriction ⓘ |
| influencedBy |
Reynolds number
NERFINISHED
ⓘ
cross-sectional area ratio ⓘ flow rate ⓘ fluid density ⓘ |
| namedAfter | Giovanni Battista Venturi NERFINISHED ⓘ |
| occursIn |
channel
ⓘ
duct ⓘ pipe ⓘ |
| relatedTo |
Bernoulli equation
NERFINISHED
ⓘ
continuity equation ⓘ pressure-velocity tradeoff in fluids ⓘ |
| requires |
continuity of mass flow
ⓘ
incompressible flow approximation for simple analysis ⓘ |
| usedFor |
aeration in water treatment
ⓘ
chemical dosing in irrigation systems ⓘ creating suction without moving mechanical parts ⓘ inducing secondary fluid flow ⓘ measuring fluid flow rate ⓘ |
| usedIn |
Venturi meter
NERFINISHED
ⓘ
aircraft pitot-static systems ⓘ aspirator ⓘ atomizer ⓘ carburetor ⓘ flow measurement devices ⓘ gas burners ⓘ medical oxygen delivery devices ⓘ mixing of fuel and air in internal combustion engines ⓘ vacuum pump ejectors ⓘ venturi scrubber pollution control devices ⓘ water aspirator laboratory equipment ⓘ |
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: Venturi effect Description of subject: The Venturi effect is a fluid dynamics phenomenon in which a fluid's pressure decreases and its velocity increases as it flows through a constricted section of pipe or channel.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Giovanni Battista Venturi