Journal cover Journal topic
Wind Energy Science The interactive open-access journal of the European Academy of Wind Energy
Journal topic
Discussion papers
https://doi.org/10.5194/wes-2017-51
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-2017-51
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research articles 22 Nov 2017

Research articles | 22 Nov 2017

Review status
This discussion paper is a preprint. It has been under review for the journal Wind Energy Science (WES). The revised manuscript was not accepted.

Numerical airfoil catalogue including 360° airfoil polars and aeroacoustic footprints

Manfred Imiela, Benjamin Faßmann, Gerrit Heilers, and Gunther Wilke Manfred Imiela et al.
  • Institute of Aerodynamics and Flow Technology, DLR, Braunschweig, 38102, Germany

Abstract. A methodology is presented for generating 360° airfoil polars and aeroacoustic characteristics by means of CFD and CAA. The aerodynamic procedure is validated against experimental data of the well-known airfoils DU-93-W-210 and DU-97-W-300. While a better prediction of the aerodynamic coefficients in the range of −30° and 30° is achieved by a combination of the k-ω SST turbulence model and a C-topology mesh, for the remaining angles of attack more confidence is gained with the SA negative turbulence model in combination with an O-topology mesh. Therefore the two data sets are subsequently fused to one complete data set using a kriging interpolation approach. The result of ten different airfoils using the proposed method is presented. For providing the aeroacoustic characteristics for a wide operation range four computations and a bilinear interpolation are needed, since the aeroacoustic is dependent on the Mach and Reynolds number. The bilinear interpolation approach is verificated by a comparison between the originally simulated and the emulated result at a fifth computational set for six different airfoils. The corresponding overall sound pressure level (OASPL) for four angles of attack for these airfoils is presented and the difference between a fully turbulent computation and simulations with fixed transition is assessed. The aeroacoustic results further include high-fidelity directivity functions.

Manfred Imiela et al.
Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Manfred Imiela et al.
Manfred Imiela et al.
Viewed  
Total article views: 516 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
205 297 14 516 10 15
  • HTML: 205
  • PDF: 297
  • XML: 14
  • Total: 516
  • BibTeX: 10
  • EndNote: 15
Views and downloads (calculated since 22 Nov 2017)
Cumulative views and downloads (calculated since 22 Nov 2017)
Viewed (geographical distribution)  
Total article views: 505 (including HTML, PDF, and XML) Thereof 502 with geography defined and 3 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited  
Saved  
No saved metrics found.
Discussed  
No discussed metrics found.
Latest update: 14 Dec 2018
Publications Copernicus
Special issue
Download
Citation
Share