Search found 7 matches

by Ka.Chang
Sat Oct 31, 2020 8:34 am
Forum: Testing
Topic: Error running HydroDyn file
Replies: 26
Views: 6832

Re: Error running HydroDyn file

Dear Dr. Jonkman, the system damping is set the same between the regular and irregular wave simulations.I agree with you that increasing wave height can induce more resonance in irregular wave.But I still have some doubts.firstly,Can I come to the conclusion that regular wave can cause tower top res...
by Ka.Chang
Thu Oct 29, 2020 7:05 pm
Forum: Testing
Topic: Error running HydroDyn file
Replies: 26
Views: 6832

Re: Error running HydroDyn file

Dear Dr. Jonkman, I'm sorry to trouble you again.I found RAO of the tower top(YawBrTDxp) under the unit regular wave(Hs=2m).I can get the resonant frequency from RAO.I study the motion response of the tower top under wave(still air:set CompInflow=0,CompAero = 2 and WakeMod = 0).condition i:regular w...
by Ka.Chang
Sat Aug 15, 2020 8:39 am
Forum: Testing
Topic: Error running HydroDyn file
Replies: 26
Views: 6832

Re: Error running HydroDyn file

Dear Dr. Jonkman,

That's very useful guidance on how to set the initial conditions in ElastoDyn.Thank you once again for your help.

Best regards,
by Ka.Chang
Fri Aug 14, 2020 3:31 am
Forum: Testing
Topic: Error running HydroDyn file
Replies: 26
Views: 6832

Re: Error running HydroDyn file

Dear Dr. Jonkman, Thank you very much! I revised it as you suggested and recalculated the PtfmHeave value.I think the simulation result should be correct.Do you think it is right? As you mentioned,the expected mean values of rotor speed and blade-pitch angle as a function of mean wind speed are give...
by Ka.Chang
Thu Aug 13, 2020 6:31 am
Forum: Testing
Topic: Error running HydroDyn file
Replies: 26
Views: 6832

Re: Error running HydroDyn file

Dear Dr. Jonkman, Thank you very much for your reply.I don't know how to draw the curve about PtfmHeave. If you plot PtfmHeave, please give it to me for reference. I will provide you some information to know why my model shows low RMS for YawBrFxp at high wind speeds.I don't know if this information...
by Ka.Chang
Wed Aug 12, 2020 8:36 am
Forum: Testing
Topic: Error running HydroDyn file
Replies: 26
Views: 6832

Re: Error running HydroDyn file

Dear Dr. Jonkman, Thank you very much for your reply.I am very sorry that I marked the RMS two curves incorrectly,The blue curve is Test21 Jacket model, and the red curve is my Jacket model.I revised it as you suggested and recalculated the PtfmHeave(ElastoDyn) and AddBLin(HydroDyn)value,The simulat...
by Ka.Chang
Tue Aug 11, 2020 8:34 am
Forum: Testing
Topic: Error running HydroDyn file
Replies: 26
Views: 6832

Re: Error running HydroDyn file

Dear Dr. Jonkman, I am doing project on Jacket platform(My jacket model is a little different from your model).I have successfully run FAST. However,I also had problems about FAST(v8.16.00a-bjj) ,I hope you can help me with these problems. 1)For no wave condtion.i can set CompHydro=0 in the FAST pri...

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