| Autor: |
Con J. Doolan, Paul A. Brandner, Paul Croaker, Mahmoud Karimi, Nicole Kessissoglou, James Venning |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Flinovia—Flow Induced Noise and Vibration Issues and Aspects-III ISBN: 9783030648060 |
| Popis: |
A numerical and experimental investigation into the flow and noise produced by a blunt-edged flat plate with a Reynolds number based on chord of 6.8 million and a Mach number of 0.0053 is presented. The flat plate had a 4:1 aspect ratio elliptic leading edge and a square trailing edge with a thickness-to-chord ratio of 0.0054. Experimental measurements were performed in a reverberant water tunnel. Pressure sensors were flush mounted on the top, bottom and rear faces of the blunt edge at the mid-span plane. Further, a hydrophone was mounted in a flooded cavity in the tunnel wall beneath a polyurethane diaphragm. An analytical model for trailing edge scattering was extended to account for near-field effects and to consider reflection of pressure waves by the tunnel walls. A large eddy simulation was also conducted, with hydrodynamic pressures on the surface of the plate extracted and combined with the analytical scattering model to predict the pressure fluctuations on the wall of the water tunnel. Numerical predictions are found to agree well with the experimental measurements. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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