Accession Number:

ADA281182

Title:

Acoustic Computations for a Low Mach Number Heated Cylinder

Descriptive Note:

Professional paper

Corporate Author:

NAVAL COMMAND CONTROL AND OCEAN SURVEILLANCE CENTER RDT AND E DIV SAN DIEGO CA

Personal Author(s):

• Mautner, T. S.

Report Date:

1994-01-01

Pagination or Media Count:

17.0

Abstract:

This paper describes the sound generated by uniform flow over a heated cylinder, calculated for a range of Reynolds and Grashof numbers. The time-dependent, incompressible flow field is computed using a vorticity-stream function method containing the Boussinesq approximation. Using the computed incompressible flow field, the radiated sound is computed using a low frequency Greens function technique. Snapshots of the vorticity and temperature fields and time histories of the radiated sound pressure are presented and compared with existing results. Computational Acoustics CA, Heated cylinder

Descriptors:

• *COMPUTATIONAL FLUID DYNAMICS
• *FLOW FIELDS
• *ACOUSTICS
• *SOUND PRESSURE
• TEMPERATURE
• MACH NUMBER
• NAVIER STOKES EQUATIONS
• REYNOLDS NUMBER
• INCOMPRESSIBLE FLOW
• LOW FREQUENCY
• SPECIAL FUNCTIONS(MATHEMATICS)
• GREENS FUNCTIONS
• COMPUTATIONS
• VORTEX SHEDDING
• TIME DEPENDENCE

Subject Categories:

• Acoustics
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE