Search found 51 matches

by Jason.Lai
Thu Jun 04, 2020 6:50 pm
Forum: General
Topic: FAST.Farm
Replies: 42
Views: 9518

Re: FAST.Farm

Dear Jason

Could you please also share the pre-release of FAST.Farm with me?

Best Wishes

Jason.Lai
by Jason.Lai
Thu Dec 13, 2018 11:47 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Compiling options for DISCON.dll
Replies: 16
Views: 10337

Re: Compiling options for DISCON.dll

Dear sir I have a question about how to compile FAST_RT_DLL.dll. I meet an error: "LINK: fatal error LNK1104: cannot open file 'LIBC.lib'." Could you tell me how to resolve it? @ECHO OFF REM The calling syntax for this script is REM Compile_FASTforLabview REM REM --------------------------...
by Jason.Lai
Thu Mar 29, 2018 10:58 am
Forum: Controls
Topic: Control for scaled-down 5MW NREL
Replies: 17
Views: 11270

Re: Control for scaled-down 5MW NREL

Dear Dr. Jason
I want to customize the source code to specify the 6-DOF motion of the platform in FAST.
And then I will verify the 6-DOF motion between FAST outputs and my scaling-down experiment results.
They have to match very well.
Is the thought correct?

Best Wishes
Jason. Lai
by Jason.Lai
Fri Mar 23, 2018 10:54 am
Forum: Controls
Topic: Control for scaled-down 5MW NREL
Replies: 17
Views: 11270

Re: Control for scaled-down 5MW NREL

Dear Dr. Jason Thanks for your suggestion and I have resolved my problem. Besides, if I can get a measurement of model 6dof motions, how do I replace 6dof motions calculated in fast v8.16 by those? Could you describe how to do it in detail? https://ars.els-cdn.com/content/image/1-s2.0-S0029801817306...
by Jason.Lai
Wed Mar 14, 2018 7:50 am
Forum: Controls
Topic: Control for scaled-down 5MW NREL
Replies: 17
Views: 11270

Re: Control for scaled-down 5MW NREL

Dear Dr. Jason Thanks for your suggestion and I have verified the result of dP/dtheta versus pitch angle. I can scale down the model in FAST v7.02d successfully. However, I meet the other question about scale-down NREL 5MW with a monopile substructure in FAST v8.16. I want to get the result of dP/dt...
by Jason.Lai
Fri Mar 09, 2018 7:42 am
Forum: Controls
Topic: Control for scaled-down 5MW NREL
Replies: 17
Views: 11270

Re: Control for scaled-down 5MW NREL

Dear Dr. Jason I refer the paper "FAST Modularization Framework for Wind Turbine Simulation: Full-System Linearization." For each wind speed/blade-pitch angle, one rotor (360˚) revolution is simulated, and an OP is set and the linearized full-system input-transmission matrix (D ) is comput...
by Jason.Lai
Wed Mar 07, 2018 7:06 am
Forum: Controls
Topic: Control for scaled-down 5MW NREL
Replies: 17
Views: 11270

Re: Control for scaled-down 5MW NREL

Dear Dr. Jason If I want to scale down NREL 5MW to one sixty-fourth, how do I define PC_KI, PC_KK, and PC_KP in my new pitch controller? Does it have any relationship with scaling proportion or I must use the linearization according to your suggestion in the post (viewtopic.php?f=4&t=394) to cal...
by Jason.Lai
Tue Jan 23, 2018 6:58 pm
Forum: Computer-Aided Engineering Software Tools
Topic: OC4 Phase II results
Replies: 39
Views: 8906

Re: OC4 Phase II results

Dear Dr. jason I can run FAST Certification Test #14: WindPACT 1.5 MW Baseline with stationary linearization in a vacuum successfully. However, I use the similar method to run Test #25: NREL 5.0 MW Baseline Wind Turbine with OC4-DeepCwind semi configuration. There are some mistakes in FAST code. Run...
by Jason.Lai
Tue Jan 16, 2018 12:00 am
Forum: General
Topic: Model, wave effects
Replies: 21
Views: 46456

Re: Model, wave effects

Dear Dr. Jason,
If I want to use Ansys-AQWA to get the hydrodynamic parameter of OC4 semi-submersible type, which parameter can I compare with WAMIT output from your NREL technical report?

Best Wishes
Jason. Lai
by Jason.Lai
Tue Jan 02, 2018 7:51 am
Forum: Computer-Aided Engineering Software Tools
Topic: OC4 Phase II results
Replies: 39
Views: 8906

Re: OC4 Phase II results

Dear Dr. Jason Thanks for your reply. Besides, is the figure reasonable compared to OC4 phase II LC3.8 result ? https://scontent-tpe1-1.xx.fbcdn.net/v/t1.0-9/26112460_10156046838668624_6590256467590779832_n.jpg?oh=98e1e8181f7fdbe18dc07a3731847980&oe=5AC27EEB Best Regards Jason. Lai
by Jason.Lai
Sun Dec 31, 2017 9:12 am
Forum: Computer-Aided Engineering Software Tools
Topic: OC4 Phase II results
Replies: 39
Views: 8906

Re: OC4 Phase II results

Dear Dr. Jason Now, I can zero out loads of the fairlead at a given point in time. However, the roll motion is different from OC4 phase II LC3.8 result. Do you know how to resolve this question? https://scontent-tpe1-1.xx.fbcdn.net/v/t1.0-9/26001274_10156041331003624_1379535595439096831_n.jpg?oh=eac...
by Jason.Lai
Thu Dec 28, 2017 8:52 pm
Forum: Computer-Aided Engineering Software Tools
Topic: OC4 Phase II results
Replies: 39
Views: 8906

Re: OC4 Phase II results

Dear Dr. Jason
Thanks for your help and it can work smoothly.
However, I have another question about MoorDyn.
How to output FairAng and AnchAng in MoorDyn?
I read MoorDyn User’s Guide but it doesn't describe about these parameter output?

Best Regards
Jason. Lai
by Jason.Lai
Tue Dec 26, 2017 8:15 am
Forum: Computer-Aided Engineering Software Tools
Topic: OC4 Phase II results
Replies: 39
Views: 8906

Re: OC4 Phase II results

Dear Dr. Jason Load Case 3.8 - damage case 1: loss of one mooring line at fairlead (line 1). The simulation length is 60 s before loss / 60 min after loss. I have revised it according to your suggestion. misc%FAIR_T(LEG) = 0*x%GLU(LEG,(p%NumElems+1)*p%NHBD-1) misc%ANCH_T(LEG) = 0*x%GLU(LEG,p%NHBD-1)...
by Jason.Lai
Tue Dec 26, 2017 1:28 am
Forum: Computer-Aided Engineering Software Tools
Topic: OC4 Phase II results
Replies: 39
Views: 8906

Re: OC4 Phase II results

Dear Dr. Jason I have revised the source code and recompiled it. It can work but the result is wrong. Do you give me some advice about my code? Thanks for your help again. Best Wishes Jason.Lai !---------------------------------------------------------------------------------------------------------...
by Jason.Lai
Thu Dec 21, 2017 12:21 am
Forum: Computer-Aided Engineering Software Tools
Topic: OC4 Phase II results
Replies: 39
Views: 8906

Re: OC4 Phase II results

Dear Dr. jason I am verifying my analysis against the OC4 Phase II results for Load Case 3.8 - damage case 1: loss of one mooring line at fairlead (line 1). The simulation length is 60 s before loss / 60 min after loss. Do you explain how to simulate the scenario about the loss of one mooring line i...

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