Dear @Marwa.Mohamed ,
Thank you for sharing the calculation method for ocean currents in the IEC standard, but I have a question about Eq. (5). How is the surface velocity Uw(0) determined as shown in Eq. (5)? Uw(0)=0.01*V1-hour(z=10m)?
Best regards,
Dear @Russell.Xu,
I’m not sure I understand your question. The equation for U_w(0) is stated in Eq. (5), based on the 1-hour mean wind-speed at 10 m elevation.
Best regards,
Dear @Jason.Jonkman
Thank you for your response. Maybe I didn’t express my question clearly. I would like to inquire if U_w(0) is equal to 0.01 multiplied by the 1-hour mean wind-speed at 10 m elevation V1-hour(z=10m) according to Eq. (5). As shown in Eq. (5), Uw(0)=0,01*V1-hour(z=10m). Therefore, I am somewhat confused about this.
Best regards,
Dear @Russell.Xu,
Yes, that is what is stated in the IEC 61400-3-1 standard for the wind-generated near-surface current, which are used to compute the 1- and 50-year return values of U_w(0).
Best regards,
Dear @Jason.Jonkman
Thank you for your prompt response. I have fully understood about it.
Best regards,