Host: The Japan Society of Mechanical Engineers
Name : International Conference on Power Engineering-2021(ICOPE-2021)
Date : October 17, 2021 - October 21, 2021
Understanding the wake impacts of a wind farm is critical for layout planning and turbine design. The main goal of this study is to model a Mass Flow Conserving Superposition (MFCS) and compare the Linear Wake superposition (LWS) while considering the wake and boundary interaction. This study factors the changes in thrust and momentum inside a wind farm cross-sectional area as the wake develops flows and interacts across five spans. We derived the mass flow conserving wake superposition approach that considers the mass continuity across the wind farm area to calculate the wake evolution between spans. The results for the wake profiles depict a quasi-periodic behavior that peaks at the last span in both the MFCS and LWS approaches. However, the MFCS approach has a more significant shift wake profile between spans than the LWS approach because it accounts for the thrust and boundary interactions changes. The MFCS approach's centerline wake velocity deficit reduces 0.47 to 0.34 m s−1 while the LWS approach's centerline wake velocity deficit remains constant around 0.6 at m s−1. A substantial shift in the MFCS approach's velocity deficit compared to the LWS approach can be attributed to changes in thrust and momentum.
