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    New Wind Turbines Findings from Technion-Israel Institute of Technology Reported (Large-eddy Simulation of a Wind Turbine Using a Filtered Actuator Line Model)


    May 13, 2022 - Energy Daily News

     

      2022 MAY 12 (NewsRx) -- By a News Reporter-Staff News Editor at Energy Daily News -- Data detailed on Energy - Wind Turbines have been presented. According to news reporting out of Haifa, Israel, by NewsRx editors, research stated, “When dealing with multirotor devices such as quadcopters or wind farms, the cost of blade-resolved large-eddy simulation (LES) becomes prohibitive. Combining LES with a family of lower-fidelity models, called actuator line models (ALMs), has grown in popularity in the past decade.”

      Funders for this research include European Union’s Horizon 2020 research and innovation programme on behalf of the NEMMO Project, United States Department of Energy (DOE), United States Department of Energy (DOE).

      Our news journalists obtained a quote from the research from the Technion-Israel Institute of Technology, “ALM replaces full blade resolution with an array of actuator points or lines parameterized by aerodynamic lift/drag polar plots along the blades. Body forces computed based on these actuator points are then projected onto the LES flow mesh, mimicking the effect of rotating blades on the flow. However, the optimal projection radius and the associated LES grid size is often too restrictive for multirotor simulations. Recently, a new tip-correction-based filtered ALM (F-ALM) was proposed by Martinez-Tossas and Meneveau (2019), which allows coarser-than-optimal grids by avoiding the associated overprediction of thrust. In this work, F-ALM is implemented into a high-order, in-house LES code to simulate National Renewable Energy Laboratory Phase VI wind turbine. It is then followed by a comparison between the baseline ALM and the newly implemented F-ALM in terms of instantaneous and time-averaged flow fields and blade loads, revealing the advantages of F-ALM in preventing the overprediction of power on coarse grids.”

      According to the news editors, the research concluded: “This encourages accurate and affordable simulations of multirotor devices in the future.”

      This research has been peer-reviewed.

      For more information on this research see: Large-eddy Simulation of a Wind Turbine Using a Filtered Actuator Line Model. Journal of Wind Engineering and Industrial Aerodynamics, 2022;222. Journal of Wind Engineering and Industrial Aerodynamics can be contacted at: Elsevier, Radarweg 29, 1043 Nx Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Wind Engineering and Industrial Aerodynamics - http://www.journals.elsevier.com/journal-of-wind-engineering-and-industrial-aerodynamics/)

      Our news journalists report that additional information may be obtained by contacting Ronith Stanly, Technion-Israel Institute of Technology, Haifa, Israel. Additional authors for this research include Steven H. Frankel, Yann Delorme and Luis A. Martinez-Tossas.

      The direct object identifier (DOI) for that additional information is: https://doi.org/10.1016/j.jweia.2021.104868. This DOI is a link to an online electronic document that is either free or for purchase, and can be your direct source for a journal article and its citation.

      (Our reports deliver fact-based news of research and discoveries from around the world.)

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