Search found 5 matches

by Andy.Platt
Tue Jan 21, 2020 11:48 am
Forum: Structural Analysis
Topic: Comparison between ElastoDyn and BeamDyn
Replies: 13
Views: 1389

Re: Comparison between ElastoDyn and BeamDyn

Hi Moritz, I ran a quick check of the NREL 5MW model at 24 m/s wind speed. For this check, the only change from the standard regression tests was the wind (current dev branch, git hash a51fffaa). I set the wind to 24 m/s at hub height with 0.2 for the power law exponent. The cone angle, shaft tilt, ...
by Andy.Platt
Mon Jan 13, 2020 2:38 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Second order file WaveDir boundary check issue
Replies: 4
Views: 1717

Re: Second order file WaveDir boundary check issue

Dear Romain, Thanks for the summary on the issue. You are correct that the wrong sign was used in the checks for WaveDirMax (this appears to have been a copy / paste error when I was developing the module). This has been corrected in the branch that is under development that will allow flexible floa...
by Andy.Platt
Mon Jan 13, 2020 8:46 am
Forum: Structural Analysis
Topic: Comparison between ElastoDyn and BeamDyn
Replies: 13
Views: 1389

Re: Comparison between ElastoDyn and BeamDyn

Dear Moritz, I think this makes sense. The simulation is close to rated power which I expect will produce the largest torsional moment along the blade. ElastoDyn does not have any torsional degree of freedom, so the tip does not twist relative to the root. Therefore in the ElastoDyn simulation, the ...
by Andy.Platt
Thu Jan 09, 2020 10:05 am
Forum: Structural Analysis
Topic: Comparison between ElastoDyn and BeamDyn
Replies: 13
Views: 1389

Re: Comparison between ElastoDyn and BeamDyn

Dear Moritz, From the second plot of the RootMx, it looks like the two simulations are at different azimuth angle at 350 seconds. In that case we would expect the blade spanwise loading to be different. Do you see differences in the spanwise loading if you investigate at a time when the azimuths ali...
by Andy.Platt
Mon Nov 12, 2012 12:43 pm
Forum: News and Announcements
Topic: Software Releases
Replies: 17
Views: 101829

Updated version of WT_Perf (v3.05.00a-adp)

We are happy to announce a new release of WT_Perf (v3.05.00a-adp), a wind turbine perfomance evaluator based on using BEM theory. New features and changes included in this release: - Modification of the solver for better convergence - Improved control of the solver through the addition of the NSplit...

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