Regarding the Power Prediction Issue of the NREL 5.0 MW Baseline Wind Turbine with OC4-DeepCwind Semi-Submersible Configuration #3095
Description
Dear Members of the NREL Team,
I am a new user who has just begun working with FAST.Farm and wind turbine simulations. Currently, I am conducting a study on the overall power performance using two aligned wind turbines, where the upstream turbine is implemented with fixed yaw control. However, I observed that when the upstream turbine is yawed at angles of 10°, 15°, 20°, and 30°, the power output of both turbines does not increase as anticipated; instead, it decreases.
This result is inconsistent with the findings reported in the technical literature I have reviewed, and I would like to understand the potential causes underlying this discrepancy. Additionally, I have noticed that other users have raised similar questions, but I have not been able to identify a suitable solution, which has been a long-standing concern for me.
Below, I have provided details of my case setup, visualization model, and power curves. I would greatly appreciate it if any team member could spare some valuable time to review my case and offer your insights and recommendations.
This is the visualization image for the 15° yaw configuration.
This is the comparison of total power between the no-yaw condition and the 15° yaw configuration.
This is the comparison of wind speed and power for the upstream turbine under the no-yaw condition and 15° yaw configuration.
This is the comparison of wind speed and power for the downstream turbine under the no-yaw condition and 15° yaw configuration.
This is the sample file for my case study.