ESDU 98019
Computer-based estimation procedure for single-stream jet noise. Including far-field, static jet mixing noise database for circular nozzles
Abstract:
A computerized method for estimating exhaust noise spectra from a database is provided. The variables considered in the interpolation/extrapolation routine make the procedure particularly applicable to estimating noise from a single-stream jet. The database need not be restricted to data for an isolated single-stream jet but could include installation effects as well as other components of single-stream engine noise. The computation involves a least squares surface fitting procedure that may be of bi-linear or bi-quadratic form. Appropriate weighting of the data is included.
To provide a basic prediction procedure for the estimation of far-field, jet mixing noise from static jet engines with circular nozzles a comprehensive database is provided. The computer program may be run using the provided database or a database generated from the user's own data. A computer program to generate this database is also included.
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ESDUpac A9819 |
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ESDUpac B9819 |
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ESDUpac C9819 |
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M9819 |
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