An experimental investigation of turbulent bounmdary-layer interaction with different serrated training-edge configurations (Record no. 2560)
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| fixed length control field | 02063nam a22001577a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20160520150915.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 160520b xxu||||| |||| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Transcribing agency | National Acoustics Laboratories |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Sivakumar, Aravind |
| 245 ## - TITLE STATEMENT | |
| Title | An experimental investigation of turbulent bounmdary-layer interaction with different serrated training-edge configurations |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc | The paper presents an experimental investigation of a turbulent boundary-layer interaction over a<br/>single large triangular serration at the Trailing-Edge (TE) of an airfoil on the flow-induced noise.<br/>Experiments were conducted at low-to-moderate Reynolds number given by 1.8 105 < Rec < 5.7<br/>105, where c is the chord of airfoil. Six different TE serration geometries were studied: Three<br/>serrations with a single large triangular geometry at the TE, two serrations with varying orientation<br/>relative to the airfoil, and a straight-edged reference plate (in which the TE triangular serration is not<br/>considered). The airfoils with different TE configurations were placed in an anechoic wind tunnel in a<br/>mean flow field with free-stream velocities of 25, 30 and 35ms1. The radiated acoustic pressure field<br/>was recorded using a spiral microphone array located in the far-field. It was found that a significant<br/>noise reduction up to 6 dB was obtained when the included angle of the triangular serration was less<br/>than 45 ,which was in agreement with Howe’s theory. The Conventional Beamforming (CB) source<br/>maps confirmed that the noise reduction was obtained by varying the included angle of the triangular<br/>serrations. It was observed that the maximum noise attenuation occurred at frequencies above 5 kHz,<br/>where the TE noise dominates over the Leading-Edge (LE) noise. For frequencies below 5 kHz, the LE<br/>noise sources dominate over the TE noise. |
| 773 0# - HOST ITEM ENTRY | |
| Title | Acoustics 2015 Hunter Valley 15-18 November 2015 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="http://dspace.nal.gov.au/xmlui/bitstream/handle/123456789/363/p18.pdf?sequence=1&isAllowed=y">http://dspace.nal.gov.au/xmlui/bitstream/handle/123456789/363/p18.pdf?sequence=1&isAllowed=y</a> |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Universal Decimal Classification |
| Koha item type | Journal article |
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