A.O.Borisyuk Study of the flow and acoustic fields in a rigid-walled channel of a circular cross-section with a local axisymmetric narrowing. Part 1. Theory |
Acoustic bulletin, Vol. 7 ¹ 1, (2004) |
| The analytical and numerical method is developed for solving the problems of noise generation by flows in channels with local geometrical inhomogeneities. Within the limits of proposed approach the obtained fields of hydrodynamic parameters are used to describe the noise sources, and the Green's function technique and the eigen-function method, as well as the correlation and spectral analysis are used to determine the the flow and acoustic fields. The problem of noise generation by steady flow in an infinite straight rigid channel with circular cross-section and local axisymmetric narrowing is solved. The analytical expressions for hydrodynamic and acoustic characteristics of the flow are obtained. |
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KEY WORDS: problems of noise generation by flows, the Green's function technique, and the eigen-function method, the correlation and spectral analysis, straight rigid channel with circular cross-section and local axisymmetric narrowing |
| TEXT LANGUAGE: Ukrainian |