Definition

1. Noun:
   • A tube with a constriction: A device consisting of a tube that narrows to a throat (a constriction) and then widens again, used to measure or control the flow rate of a fluid (liquid or gas). The change in diameter causes a change in fluid pressure and velocity according to Bernoulli's principle.
   • A person (proper noun): Robert Venturi, an influential American architect.

Examples of Usage

• Noun (Device):

  • The engineer installed a venturi in the pipeline to measure the flow of water.
  • A carburetor uses a venturi to create a vacuum that draws fuel into the airstream.
  • The increase in fluid speed through the venturi causes a drop in pressure.

• Noun (Person):

  • Venturi was a leading figure in postmodern architecture.
  • The design principles of Venturi challenged modernist orthodoxy.

Advanced Usage

• Venturi effect: The reduction in fluid pressure that results when a fluid flows through a constricted section (the throat) of a pipe. This is the core physical principle applied by a venturi device.
  • The Venturi effect is exploited in many spray nozzles and aspirators.
• Venturi meter: A specific instrument that uses a venturi tube to measure the volumetric flow rate of a fluid.
  • The Venturi meter provided accurate flow data for the experiment.

Variants and Related Words

• Venturi tube: Another term for the venturi device itself.
• Venturimeter: A synonym for venturi meter.

Synonyms

• For the device: constriction tube, flow tube, differential pressure flow meter.
• For the person: Robert Venturi, Robert Charles Venturi Jr.

Related Phrases

• Venturi scrubber: A pollution control device that uses the venturi effect to remove particles from an exhaust gas stream.
  • The factory installed a Venturi scrubber to clean its emissions.

Noun

1. a tube with a constriction; used to control fluid flow (as in the air inlet of a carburetor)
2. United States architect (born in 1925)