Forum
Important Notice for New User Registrations
To combat an increasing number of spam and bot registrations, we now manually approve all new user registrations. While this may cause a delay until your account is approved, this step is essential to ensure the quality and security of this forum.
To help us verify your registration as legitimate, please use a clear name as user name or an official email address (such as a work, university, or similar address). If you’re concerned that we may not recognize your registration as non-spam, feel free to email us at with a request to approve your username.
Define wind speed from 3 to 30 m/s in 300s
How to define the wind condition in QBlade where the wind speed increases linearly from 3m/s to 30m/s within 300 seconds?
Hi,
the hub height wind file format (.hht) allows to prescribe timeseries of wind velocities.
https://docs.qblade.org/src/user/windfield/windfield.html#hub-height-file
This format is also used for the “deterministic” wind events that are defined in the standard (ECD, EOG, etc…).
BR,
David
Hi David,
Thank you very much for your reply, and the wind file format (.hht) works. However, the wind speed looks not linearly. Is there any other settings need to check to make sure it goes linearly?
If you can check the .hht file (with .txt file name due to upload limits) I created and the corresponding wind speed plot picture in the attachments for details? Thanks.
BR,
Uploaded files:- You need to login to have access to uploads.
Hi,
what you are plottng is the measured wind speed at the hub height. This includes any relative motion of the turbine, e.g. when the tower is oscillating this movement is felt by this sensor.
There are other channels that show only the wind velocity, such as: “Abs Inflow Vel. at Hub [m/s]”
BR,
David
Hi David,
Great. I followed your instruction and it solved.
Thank you!
