Tower aerodynamics

Discuss the theory and modeling of rotor aerodynamics.

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Aonghus.OConnor
Posts: 20
Joined: Tue Oct 11, 2016 2:14 am
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Location: Ireland

Tower aerodynamics

Postby Aonghus.OConnor » Thu Jan 05, 2017 5:38 am

Hi all,

I notice in the ADTwr_CalcOutput routine that the relative velocity is calculated as:

Code: Select all

V_rel = u%InflowOnTower(:,j) - u%TowerMotion%TranslationDisp(:,j) ! relative wind speed at tower node


Should it not be:

Code: Select all

V_rel = u%InflowOnTower(:,j) - u%TowerMotion%TranslationVel(:,j) ! relative wind speed at tower node


or am I mistaken?

Thanks

Jason.Jonkman
Posts: 5915
Joined: Thu Nov 03, 2005 4:38 pm
Location: Boulder, CO
Contact:

Re: Tower aerodynamics

Postby Jason.Jonkman » Thu Jan 05, 2017 6:48 am

Dear Aonghus,

This definitely looks like a bug. At least its easy to fix (as you identified). We'll get this fixed in the next release of AeroDyn.

Best regards,
Jason Jonkman, Ph.D.
Senior Engineer | National Wind Technology Center (NWTC)

National Renewable Energy Laboratory (NREL)
15013 Denver West Parkway | Golden, CO 80401
+1 (303) 384 – 7026 | Fax: +1 (303) 384 – 6901
nwtc.nrel.gov


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