Search found 7 matches

by Benjamin.Whitby
Tue Feb 18, 2020 3:29 pm
Forum: Structural Analysis
Topic: OC4-DeepCwind semisubmersible - WAMIT Files
Replies: 5
Views: 873

Re: OC4-DeepCwind semisubmersible - WAMIT Files

marin_semi.1.txt Hi Jason, Thank you for that. I can derive the info I need from the mass matrix. I just wanted to confirm something with you. The WAMIT output files contained in the HydroData folder (reg_tests\r-test\glue-codes\openfast\5MW_Baseline\HydroData) of OpenFast are attached. What format...
by Benjamin.Whitby
Thu Feb 13, 2020 4:00 pm
Forum: Structural Analysis
Topic: OC4-DeepCwind semisubmersible - WAMIT Files
Replies: 5
Views: 873

Re: OC4-DeepCwind semisubmersible - WAMIT Files

Hi, Yes, sorry I probably should have been more specific. It would be the mass of the entire system including the tower-top. If there is data on both i.e. full system (rotor + drivetrain + nacelle + tower + substructure + ballast) and just platform +ballast + tower that would be ideal. However, eith...
by Benjamin.Whitby
Thu Feb 13, 2020 1:21 pm
Forum: Structural Analysis
Topic: OC4-DeepCwind semisubmersible - WAMIT Files
Replies: 5
Views: 873

OC4-DeepCwind semisubmersible - WAMIT Files

Dear All I am working with the OC4-DeepCwind semisubmersible model. I am developing a model of the OC4-DeepCwind semisubmersible in a different software package (ProteusDS). I to compare the ProteusDS model to the FAST model for validation purposes. I am trying to produce WAMIT output files (.1 adde...
by Benjamin.Whitby
Thu Dec 12, 2019 11:25 am
Forum: Tidal Current
Topic: Tidal Turbine Simulation in Open Fast - Inclusion of Hydrodynamic Added Mass
Replies: 2
Views: 1588

Re: Tidal Turbine Simulation in Open Fast - Inclusion of Hydrodynamic Added Mass

Thanks Jason,

Very helpful. I will try and reach out to Robynne.
by Benjamin.Whitby
Wed Dec 11, 2019 12:47 pm
Forum: Tidal Current
Topic: Tidal Turbine Simulation in Open Fast - Inclusion of Hydrodynamic Added Mass
Replies: 2
Views: 1588

Tidal Turbine Simulation in Open Fast - Inclusion of Hydrodynamic Added Mass

Dear All, I am currently investigating the possibility of modeling a Marine Hydrokinetic Turbine (Tidal Turbine) in Open Fast. I am aware that neither FAST V8 or Open Fast currently considers the effects of added-mass as it is not really a significant contributor to wind turbine loading. However, du...
by Benjamin.Whitby
Wed Jun 12, 2019 5:57 pm
Forum: Rotor Aerodynamics
Topic: AeroDyn V15 standalone forces compared to coupled Aerodyne Openfast forces ( RtAeroFxh RtAeroFyh RtAeroFzh)
Replies: 2
Views: 1893

Re: AeroDyn V15 standalone forces compared to coupled Aerodyne Openfast forces ( RtAeroFxh RtAeroFyh RtAeroFzh)

Dear Jason, Thank you for the helpful response. The structural degrees of freedom were disabled; however, it turns out that the shaft tilt angle was causing the 1P oscillation in the Aerodynamic forces. As the tilt angle was not the same the results from Aerodyne and OpenFast were not matching. I ha...
by Benjamin.Whitby
Tue Jun 11, 2019 1:01 pm
Forum: Rotor Aerodynamics
Topic: AeroDyn V15 standalone forces compared to coupled Aerodyne Openfast forces ( RtAeroFxh RtAeroFyh RtAeroFzh)
Replies: 2
Views: 1893

AeroDyn V15 standalone forces compared to coupled Aerodyne Openfast forces ( RtAeroFxh RtAeroFyh RtAeroFzh)

Dear All, I was hoping that somebody might be able to sense check some results for me. I have run two simulations with the aim of obtaining aerodynamic loads on the rotor. The first simulation was run using OpenFast and RtAeroFxh RtAeroFyh RtAeroFzh RtAeroMxh RtAeroMyh RtAeroMzh (which I believe are...

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