Hello,
I conducted a comparison of the velocity deficit distribution between semi-submersible and monopile designs using the IEA 15MW wind turbine.The analysis was performed using FAST.Farm under the following conditions:
Analysis Conditions
- Wind speed: Constant wind speed of 9 m/s
- Water surface conditions: Still water
Graph Details
- Measurement location: 6D (1440 m) downstream from the wind turbine
- Measurement height: 150 m
- Data format: Horizontal plane velocity deficit distribution
- Figure layout:
- Top figure: Nacelle yaw angle set to 0°
- Bottom figure: Nacelle yaw angle set to 10°
Summary of Results
- The velocity deficit of the monopile design was observed to be larger than that of the semi-submersible design.
Data Used
- The same fstf file was used for both designs.
- It was also confirmed that changes in the value of f_c had no impact on the results.
Question
Why does such a difference in velocity deficit occur between the semi-submersible and monopile designs?
Are there any points in the settings of the fstf file that need to be modified to better understand this difference?