Impulsively started incompressible turbulent jet

Technical Report · Wed Oct 01 00:00:00 EDT 1980

DOI:https://doi.org/10.2172/5017517· OSTI ID:5017517

Witze, P O

Hot-film anemometer measurements are presented for the centerline velocity of a suddenly started jet of air. The tip penetration of the jet is shown to be proportional to the square-root of time. A theoretical model is developed that assumes the transient jet can be characterized as a spherical vortex interacting with a steady-state jet. The model demonstrates that the ratio of nozzle radius to jet velocity defines a time constant that uniquely characterizes the behavior and similarity of impulsively started incompressible turbulent jets.

• Research Organization: Sandia National Lab. (SNL-CA), Livermore, CA (United States)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5017517
• Report Number(s): SAND-80-8617
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
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MATHEMATICAL MODELS
TURBULENT FLOW
AERODYNAMICS
AIR
EXPERIMENTAL DATA
FLOW RATE
HOT WIRE ANEMOMETERS
JETS
THEORETICAL DATA
ANEMOMETERS
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ENGINES
FLUID FLOW
FLUID MECHANICS
FLUIDS
FUEL SYSTEMS
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HEAT ENGINES
INFORMATION
MEASURING INSTRUMENTS
MECHANICS
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420400* - Engineering- Heat Transfer & Fluid Flow
330100 - Internal Combustion Engines