In WindSim the air density parameter appears in three modules: Wind Fields, Wind Resources, and Energy.
- Air density in Wind Fields module
The air density parameter in the Wind Fields module is utilized to define the fluid property, which typically does not significantly impact simulation results. Therefore, in typical wind flow studies across a windfarm, it is acceptable to retain the default value for air density.
- Air density in Wind Resource and Energy module
The air density parameter in the Wind Resources and Energy modules plays a crucial role in the air density correction process. This correction is necessary because sometimes the provided power curves are based on standard air conditions rather than site-specific. When air density is lower, it results in reduced wind energy production. By conducting air density correction, a more accurate estimation of wind resource and energy potential can be achieved. - The air density correction methods are consistent across both the Wind Resource and Energy modules. You can find detailed information about each correction method on the "Description" page within the software's graphical user interface. If you already have a power curve that accounts for site-specific air density, you can use it directly without needing air density correction. However, if the elevation of the turbines varies significantly, you may still want to consider activating air density correction, specifically the individual option. By choosing the "Individual" option, each turbine location will have its unique air density calculated based on its elevation, ensuring accurate results after applying the correction method.