Accession Number:

ADA056377

Title:

A Discrete Vortex Simulation of a Two-Dimensional Shear Layer with Prediction of the Hydrodynamic Noise,

Descriptive Note:

Corporate Author:

DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD

Personal Author(s):

• Grabowski,Walter J.
• Telste,John G.

Report Date:

1978-06-01

Pagination or Media Count:

37.0

Abstract:

A numerical simulation of the two-dimensional shear layer occurring at the interface of two streams of different velocity is described. The shear layer is represented by a large number of discrete vortices and is allowed to evolve in accordnance with the velocity potential of the vortices. It is found that the model effectively simulates the large-scale evolution of the layer. The model, however, is found to be inadequate for predicting the hydrodynamic sound generated in the shear layer because small-scale vortex motion plays a major role in acoustic prediction. Author

Descriptors:

• *SHEAR PROPERTIES
• *VORTICES
• *POTENTIAL FLOW
• MATHEMATICAL MODELS
• EQUATIONS OF MOTION
• LAYERS
• MIXING
• TWO DIMENSIONAL FLOW
• FLOW NOISE
• NUMERICAL METHODS AND PROCEDURES

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE