Articles | Volume 6, issue 5
https://doi.org/10.5194/wes-6-1263-2021
https://doi.org/10.5194/wes-6-1263-2021
Research article
 | 
22 Sep 2021
Research article |  | 22 Sep 2021

Ducted wind turbines in yawed flow: a numerical study

Vinit Dighe, Dhruv Suri, Francesco Avallone, and Gerard van Bussel

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Cited articles

Abe, K., Nishida, M., Sakurai, A., Ohya, Y., Kihara, H., Wada, E., and Sato, K.: Experimental and numerical investigations of flow fields behind a small wind turbine with a flanged diffuser, J. Wind Eng. Ind. Aerod., 93, 951–970, 2005. a
Abe, K.-I. and Ohya, Y.: An investigation of flow fields around flanged diffusers using CFD, J. Wind Eng. Ind. Aerod., 92, 315–330, 2004. a
ANSYS, I.: ANSYS ICEM CFD user’s manual 18.0, ANSYS Inc., Canonsburg, Pennsylvania, USA, 2018. a
Apsley, D. and Leschziner, M.: Advanced turbulence modelling of separated flow in a diffuser, Flow, Turbulence and Combustion, 63, 81–112, https://doi.org/10.1023/A:1009930107544, 2000. a
Avallone, F., Ragni, D., and Casalino, D.: On the effect of the tip-clearance ratio on the aeroacoustics of a diffuser-augmented wind turbine, Renew. Energ., 152, 1317–1327, 2020. a
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Ducted wind turbines (DWTs) can be used for energy harvesting in urban areas where non-uniform flows are caused by the presence of buildings or other surface discontinuities. For this reason, the aerodynamic performance of DWTs in yawed-flow conditions must be characterized. It is found that the duct cross-section camber offers not only insensitivity to yaw but also a gain in performance up to a specific yaw angle; thereafter any further increase in yaw results in a performance drop.
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