Multi-rotor system using brimmed-diffuser wind turbines for power output increase

Yuji Ohya, K. Watanabe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Brimmed-diffuser augmented wind turbines (B-DAWTs) can significantly increase the performance of the rotor. Multi-rotor systems (MRSs) have a lot of merits such as significant saving mass and overall cost of the wind turbine system. In the present research, B-DAWTs are studied in a MRS. In wind tunnel experiments, the power output and aerodynamics of two and three B-DAWTs placed in close vicinity have been investigated. Results show a significant increase of up to 12% in total power output of the MRS with B-DAWTs compared to the sum of the stand-alone same turbines. The accelerated gap flows between B-DAWTs in a MRS cause lowered pressure regions due to vortex interaction behind the brimmed diffusers and draw more wind into turbines.

Original languageEnglish
Title of host publication15th International Energy Conversion Engineering Conference, 2017
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105128
DOIs
Publication statusPublished - 2017
Event15th International Energy Conversion Engineering Conference, 2017 - Atlanta, Georgia
Duration: Jul 10 2017Jul 12 2017

Publication series

Name15th International Energy Conversion Engineering Conference, 2017

Other

Other15th International Energy Conversion Engineering Conference, 2017
CountryGeorgia
CityAtlanta
Period7/10/177/12/17

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology

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    Ohya, Y., & Watanabe, K. (2017). Multi-rotor system using brimmed-diffuser wind turbines for power output increase. In 15th International Energy Conversion Engineering Conference, 2017 (15th International Energy Conversion Engineering Conference, 2017). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2017-4804