load of mooring line

Discuss theory and modeling of wind-turbine structures.

Moderator: Bonnie.Jonkman

Cheng.Zhang
Posts: 53
Joined: Tue Nov 14, 2017 6:50 am
Organization: ECN
Location: france

load of mooring line

Postby Cheng.Zhang » Wed Sep 25, 2019 10:44 am

Hello,

Could anyone tell me how to get loads of the mooring lines from FAST 8 ?
The model I used is OC3Hywind, I didn't find any information about the mooring line load from the User's Guide.

Many thanks,
Cheng

Jason.Jonkman
Posts: 4280
Joined: Thu Nov 03, 2005 4:38 pm
Location: Boulder, CO
Contact:

Re: load of mooring line

Postby Jason.Jonkman » Wed Sep 25, 2019 1:11 pm

Dear Cheng.Zhang,

I assume you are using Test24 from the FAST v8 CertTest, which is a model of the NREL 5-MW turbine atop the OC3-Hywind spar. This model uses MAP++ to model the mooring system (quasi-statically). In MAP++, the mooring line fairlead and anchor tensions can be output by specifying the "tension_fair" and "tension_anch" flags in the MAP++ input file (in fact, they are already set in the Test24 example, and so, these line loads are already written to the output file of Test24).

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

Cheng.Zhang
Posts: 53
Joined: Tue Nov 14, 2017 6:50 am
Organization: ECN
Location: france

Re: load of mooring line

Postby Cheng.Zhang » Thu Sep 26, 2019 3:12 am

Dear Jason,

Thank you!
I found that T and T_a in the outlist represent fairlead force and anchor force respectively. It is always there, but I never take notice of them... :oops:

Best regards,
Cheng


Return to “Structural Analysis”

Who is online

Users browsing this forum: Rachael.Smith and 0 guests