| Alternative title | Le rayonnement dans le champ lointain des tons d'intéraction entre un rotor et un stator dans une conduite annulaire |
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| Download | - View final version: Far field radiation of rotor-stator interaction tones from an annular duct (PDF, 5.1 MiB)
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| DOI | Resolve DOI: https://doi.org/10.4224/40003672 |
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| Author | Search for: Krishnappa, G.1; Search for: Jones, L. R.1 |
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| Affiliation | - National Research Council Canada. Division of Mechanical Engineering
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| Format | Text, Technical Report |
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| Physical description | 25 p. |
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| Abstract | An expression is derived to calculate the directivity of the far field sound pressure levels radiated from an annular duct based on Tyler and Sofrin's approach for a circular duct. Both radial and circumferential variations in the acoustic pressure field inside the duct are considered in the derivation. A computer programme to calculate the generation, propagation and far field radiation of tones from a single stage ducted fan is described. Some illustrative examples are worked out to show the effect of hub/tip ratio on the far field directivity. Computed results for the cases considered in Tyler and Sofrin's paper are in close agreement. |
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| Publication date | 1973-04 |
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| Publisher | National Research Council Canada |
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| Series | |
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| Language | English |
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| Peer reviewed | No |
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| NRC number | NRCC 13260 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | d29816c3-ee83-4037-8371-00a917d128b0 |
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| Record created | 2025-08-28 |
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| Record modified | 2025-11-03 |
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