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Numerical and Experimental Investigation of the Flow-Induced Noise of a Wall-Mounted Airfoil
| Content Provider | Semantic Scholar |
|---|---|
| Author | Croaker, Paul Moreau, Danielle J. Awasthi, Manuj Karimi, Mohammad Doolan, Con J. Kessissoglou, Nicole J. |
| Copyright Year | 2017 |
| Abstract | A numerical and experimental investigation into the flow field around a finite wall-mounted airfoil is presented. Measurements were performed in an open-jet anechoic wind tunnel for a finite wall-mounted NACA 0012 airfoil with an aspect ratio of one. The airfoil was tested at zero degree angle of attack, with a Mach number of 0.06 and Reynolds number based on chord of 274,000. The measurements include single hotwire anemometry in the near-wake of the airfoil at a number of locations in the mid-span and tip regions. A large eddy simulation (LES) of flow past the airfoil was performed, and good agreement with measurements was obtained. Based on Lighthill's acoustic analogy, flow-induced noise sources were then extracted from the LES data. Sound radiation to the far-field and the incident acoustic pressure on the airfoil were both predicted using a near-field formulation for the aeroacoustic pressure. The boundary element method (BEM) was then used to predict the scattering of the incident pressure field by the airfoil as well as the total far-field acoustic pressure. |
| Starting Page | 99 |
| Ending Page | 112 |
| Page Count | 14 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/978-3-319-76780-2_7 |
| Alternate Webpage(s) | http://www.personal.psu.edu/faculty/s/a/sah19/Croaker.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
