Augmenting Vertical Energy Entrainment within Wind Farms via Lifting Devices
YuanTso Li (TU Delft - Aerospace Engineering)
Andrea Sciacchitano (TU Delft - Aerospace Engineering)
Wei Yu (TU Delft - Aerospace Engineering)
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Abstract
This study evaluates the addition of lifting devices (LDs) in conventional wind farms as a practical step toward realizing the concept of regenerative wind farm (RGWF). RANS-based CFD simulations are performed to investigate multiple spatial arrangements of LDs within wind farms. The results show that installing LDs between turbines can substantially increase wind farm power output by more than 80%, further supporting the concept of RGWF. It is found that the tandem placements outperform the staggered ones. Moreover, the up-washing LDs are considered more effective than the down-washing ones in terms of vertical energy entraining capabilities. Although clear trends emerge, the study is limited by large uncertainties associated with RANS turbulence models, making quantitative assessments rather challenging. Experimental testing and simulations using higher-fidelity numerical methods are recommended for future work to yield more quantitative outcomes.
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