Search found 70 matches

by Simon.Wiedemann
Fri Jun 28, 2019 7:01 am
Forum: Computer-Aided Engineering Software Tools
Topic: Boat impact / Point Loading
Replies: 1
Views: 664

Boat impact / Point Loading

Hi there, i try to figure out how to incorperate a boat impact load case for an offshore wind turbine. i) is there any possibility to include a single force dependent on time at water line? ii) If no, would it be feasible to misuse icedyn or icefloe in order to include such a force? Thank you and be...
by Simon.Wiedemann
Wed Jan 30, 2019 6:11 am
Forum: Computer-Aided Engineering Software Tools
Topic: Instructions for Compiling FAST
Replies: 200
Views: 122318

Re: Instructions for Compiling FAST

Dear Jason, unfortunately compilation of OpenFAST is still an issue for me. Could you provide the newest version of OpenFAST (2.0.0 or even 2.1.0) as *.exe for Windows? Can you give a hint on how to compile OpenFAST without Visual Studio as 32bit version on Windows? Thank you very much. Best regards...
by Simon.Wiedemann
Wed Dec 12, 2018 6:15 am
Forum: Computer-Aided Engineering Software Tools
Topic: Instruction for the Seismic fast version
Replies: 17
Views: 2509

Re: Instruction for the Seismic fast version

Hi Jason,

are there any plans to include a/the seismic modul in the latest version of OpenFAST?

Best regards,
Simon
by Simon.Wiedemann
Fri Aug 24, 2018 3:23 am
Forum: Computer-Aided Engineering Software Tools
Topic: Semi-active TMD control using Simulink
Replies: 11
Views: 2407

Re: Semi-active TMD control using Simulink

Dear Jason, the turbine model is self developed. I´m running normal turbulent conditions (IEC ed.3 DLC 1.2). Pitch angle, Rotor speed and other operational parameters match relatively good with BLADED 4.3. I guess, that then the blade model / airfoils is the reason for the error. Could you give a hi...
by Simon.Wiedemann
Thu Aug 23, 2018 8:25 am
Forum: Computer-Aided Engineering Software Tools
Topic: Semi-active TMD control using Simulink
Replies: 11
Views: 2407

Re: Semi-active TMD control using Simulink

ok thank you for clarifying. So I get a lot of warnings but the simulation does not abort as you said. Can you give an advice to reduce the amount of warnings related to invalid phi? Could a simulation with a warning like this be not correct or can I ignore this warning? Thank you and best regards, ...
by Simon.Wiedemann
Thu Aug 23, 2018 5:22 am
Forum: Computer-Aided Engineering Software Tools
Topic: Semi-active TMD control using Simulink
Replies: 11
Views: 2407

Re: Semi-active TMD control using Simulink

Dear Laurin, I'm not sure exactly what, but "something" is triggering an error regarding "no valid value of phi". There were issues in AeroDyn v15.03 within FAST v8.16 that led to this error in some cases. However, these issues have been fixed in AeroDyn v15.04 and newer, includ...
by Simon.Wiedemann
Mon Aug 06, 2018 12:59 am
Forum: Computer-Aided Engineering Software Tools
Topic: Questions about the HydroDyn Module
Replies: 35
Views: 12454

Re: Questions about the HydroDyn Module

Dear Jason, thanks for the explanation. I try to calculate the mass for blade and tower. I take all values from the ElastoDyn summary. So the interpolation from the input to the analysis nodes already took place. I take the values given for the analysis nodes and want to calculate the given masses. ...
by Simon.Wiedemann
Fri Aug 03, 2018 12:54 am
Forum: Computer-Aided Engineering Software Tools
Topic: Questions about the HydroDyn Module
Replies: 35
Views: 12454

Re: Questions about the HydroDyn Module

Dear Yingyi Liu, The integration to find the total blade and tower masses in ElastoDyn is quite simple. I'll explain for the blade; the tower is similar. First, the mass distribution from the blade file (BMassDen) is linearly interpolated to the analysis nodes, which are located in the centers of t...
by Simon.Wiedemann
Thu Aug 02, 2018 8:47 am
Forum: Computer-Aided Engineering Software Tools
Topic: Blade mass in summary file of Elastodyn
Replies: 1
Views: 914

Blade mass in summary file of Elastodyn

Hi all, can someone explain how the mass of the blade, that is output in ElastoDyn's summary, is calculated? I tried some different ideas taking the distributed and interpolated blade properties from the same summary as basis but without success. (I'm using the latest version of OpenFAST with AeroDy...
by Simon.Wiedemann
Mon Jul 23, 2018 12:52 am
Forum: Structural Analysis
Topic: ElastoDyn handeling of Input TMassDen
Replies: 3
Views: 3286

Re: ElastoDyn handeling of Input TMassDen

Dear Jason,

did I got you right, that it is not possible to define point masses in ElastoDyn?
How are you defining additional masses for flanges or internals?
Is there a different option that allows the definition of point masses for tower and or blade?

Best regards,
Simon
by Simon.Wiedemann
Fri Jul 20, 2018 5:21 am
Forum: Structural Analysis
Topic: OC$-Phase II Centre of Gravity and Mass
Replies: 17
Views: 6710

Re: OC$-Phase II Centre of Gravity and Mass

Dear Jason, 1. I fixed the error by selecting at least one output for all three blades, in my case BlPitch1, BlPitch2, BlPitch3. So I guess the case that no triplets of blade outputs is defined leds to an error in fx_mbc3.m. Can you confirm this? 2. I would like to linearize a onshore turbine model ...
by Simon.Wiedemann
Fri Jul 20, 2018 3:41 am
Forum: Structural Analysis
Topic: ElastoDyn handeling of Input TMassDen
Replies: 3
Views: 3286

ElastoDyn handeling of Input TMassDen

Dear all, I`m facing issues with defining pointmasses for the tower in ElastoDyn. I included these Pointmasses as higher value for TMassDen but the summary from ElastoDyn shows different values. In ElastoDyn I defined 62 sections. In the summary there are 20 sections. Can you give a hint how these v...
by Simon.Wiedemann
Thu Jul 19, 2018 2:14 am
Forum: Structural Analysis
Topic: OC$-Phase II Centre of Gravity and Mass
Replies: 17
Views: 6710

Re: OC$-Phase II Centre of Gravity and Mass

Dear Jason, 1) are there any requirements regarding the outputs defined in ElastoDyn and the main file of OpenFAST to get correct results from fx_mbc3()? I get the following error: Error using fx_mbc3 (line 99) **ERROR: the number of column vectors in RotTripletIndicesOutput must equal 3, the num of...
by Simon.Wiedemann
Thu May 24, 2018 9:15 am
Forum: Computer-Aided Engineering Software Tools
Topic: Linking between Inflow and *.sum fle from Turbsim
Replies: 3
Views: 1022

Re: Linking between Inflow and *.sum fle from Turbsim

Dear Jason, yes, you got me right. I would like to modify the turbulence of existing wind files. These are generated by TurbSim OR by Bladed. With a simple test I was able to change the Ti with the *.sum file for a bladed generated wind file. In the summary of Inflow the correct TI was printed. Is t...
by Simon.Wiedemann
Thu May 24, 2018 5:09 am
Forum: Computer-Aided Engineering Software Tools
Topic: Problem with Bladed style DLL (FAST 8.16 with AD15 and Bladed 4.3)
Replies: 11
Views: 3035

Re: Problem with Bladed style DLL (FAST 8.16 with AD15 and Bladed 4.3)

Dear all,

my controller issue has been resolved with OpenFAST 1.0.0 with the 32bit version (https://github.com/OpenFAST/openfast/re ... tag/v1.0.0).
Now the comparison of input (logged with a wrapper) to the controller is identical between Bladed 4.3 and OpenFAST 1.0.0.

Best regards,
Simon

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