Search found 15 matches

by Tiasa.Ghosh
Mon Oct 12, 2020 9:42 am
Forum: Computer-Aided Engineering Software Tools
Topic: Modeling a spar in FAST (ElastoDyn & HydroDyn)
Replies: 1
Views: 453

Modeling a spar in FAST (ElastoDyn & HydroDyn)

Hello everybody :) I have tried to model a spar in AQWA which I would now like to model in FAST to have a coupled analysis. I have gone through HydroDyn manual and there are few questions in my mind: 1. if my spar is ballasted, does the variable PtfmMass in ElastoDyn include the mass of ballast or i...
by Tiasa.Ghosh
Fri Sep 04, 2020 5:15 am
Forum: Computer-Aided Engineering Software Tools
Topic: 15MW MaineSemi-sub floater simulation shows tower strike
Replies: 8
Views: 1462

Re: 15MW MaineSemi-sub floater simulation shows tower strike

Dear Jason, The initial rotor speed in the new files (i.e after I downloaded and compiled OpenFAST again with the dev branch in Aug end) was set to 5.11 rpm I looked at the initial rotor speed in the Monopile files which I got when I downloaded and compiled OpenFAST for the first time (Jul 2020), it...
by Tiasa.Ghosh
Thu Sep 03, 2020 1:12 am
Forum: Computer-Aided Engineering Software Tools
Topic: 15MW MaineSemi-sub floater simulation shows tower strike
Replies: 8
Views: 1462

Re: 15MW MaineSemi-sub floater simulation shows tower strike

Dear Jason, thank you for your response. I went through the post you mentioned before, and followed the suggestion of compiling and downloading the Dev branch. so I did that and now it seems to run perfectly. I ran the Monopile case for now. I am yet to run the Semi-sub model with the new compiled v...
by Tiasa.Ghosh
Thu Aug 27, 2020 9:28 am
Forum: Computer-Aided Engineering Software Tools
Topic: 15MW MaineSemi-sub floater simulation shows tower strike
Replies: 8
Views: 1462

15MW MaineSemi-sub floater simulation shows tower strike

Hello everybody! I am using OpenFAST with Cygwin and am trying to run 15MW WT with UMaine Semisubmersible floater simulation. I have kept everything constant in the files as given. Upon running the simulation with DISCON.dll, I get the following error message: 15MW.png I read other posts mentioning ...
by Tiasa.Ghosh
Mon Jun 29, 2020 1:16 am
Forum: Systems Engineering Software Tools
Topic: Installation of OpenFAST
Replies: 22
Views: 12106

Re: Installation of OpenFAST

Hello everybody, I have been working with FAST v8.16 and tried installing OpenFAST for the updated version and 15MW RWT model. However, I always run into issues and I am never able to install the software completely. As I have tried multiple times through various processes (for Windows) described in...
by Tiasa.Ghosh
Tue May 19, 2020 4:36 am
Forum: Computer-Aided Engineering Software Tools
Topic: GenPwr exceeding Rated Power
Replies: 3
Views: 1071

Re: GenPwr exceeding Rated Power

Dear Dr. Jason, Thank you for your explanation. The document indeed clears up the doubt for increased GenPwr and using constant torque control strategy in Region 3. I wanted to know the implications for overloading of the generator even for short span of time. Does that mean that in practical scenar...
by Tiasa.Ghosh
Mon May 18, 2020 3:20 am
Forum: Computer-Aided Engineering Software Tools
Topic: Tower top loads estimation for substructure design
Replies: 1
Views: 577

Tower top loads estimation for substructure design

Dear all, I want to try out new floating substructure design coupled with wind turbine. I have read a similar thread regarding this (jacket substructure designing): https://wind.nrel.gov/forum/wind/viewtopic.php?f=4&t=1778. I had few questions regarding estimation of tower top loads and forces: ...
by Tiasa.Ghosh
Wed Feb 19, 2020 9:57 am
Forum: Computer-Aided Engineering Software Tools
Topic: GenPwr exceeding Rated Power
Replies: 3
Views: 1071

GenPwr exceeding Rated Power

Hello Everybody, I have simulated the 5MW WT with OC3 Hywind Spar (with unchanged settings). I plotted the graph for GenPwr against time and found that at certain time step, it reached more than 5MW (around 5.5MW). Next I changed the wind inflow file to a PwrCrv.wnd file with wind speed from 5m/s to...
by Tiasa.Ghosh
Wed Dec 11, 2019 1:28 am
Forum: Computer-Aided Engineering Software Tools
Topic: Test04 results meaning
Replies: 2
Views: 1180

Re: Test04 results meaning

Dear Jason,
thank you for your explanation. You were helpful as always :)

Regards,
Tiasa
by Tiasa.Ghosh
Mon Dec 09, 2019 7:42 am
Forum: Computer-Aided Engineering Software Tools
Topic: Test04 results meaning
Replies: 2
Views: 1180

Test04 results meaning

Hello everybody, I am trying to understand FAST better by running the test case simulations. I had a query about Test04 results. The settings for the test is free yaw with a turbulence field. The flags GenDOF is False while YawDOf is True. the simple induction generator is used with a synchronous ge...
by Tiasa.Ghosh
Tue Nov 12, 2019 7:01 am
Forum: Computer-Aided Engineering Software Tools
Topic: Visualisation for Testcases other than NREL 5MW
Replies: 1
Views: 1058

Visualisation for Testcases other than NREL 5MW

Hello everybody, I am trying to visualise the Testcases. I have followed the procedure for turning the switches on to produce files for Paraview and have been successful so far. However, the surface visualisation is available only for Testcases 18-24 which are using the NREL 5MW WT. I am aware that ...
by Tiasa.Ghosh
Mon Nov 11, 2019 7:14 am
Forum: Computer-Aided Engineering Software Tools
Topic: FAST theory manual
Replies: 375
Views: 82461

Re: FAST theory manual

Dear Jason, Thank you for sending the manual. I received the email with an attachment but I am unable to open it (maybe my current organisation's internet is blocking any attachment from an external source). Could you send it at 93.tiasa@gmail.com? This is my personal address and I will be able to a...
by Tiasa.Ghosh
Mon Nov 11, 2019 6:51 am
Forum: Computer-Aided Engineering Software Tools
Topic: FAST theory manual
Replies: 375
Views: 82461

Re: FAST theory manual

Hello Jason,
I am eager to learn about FAST's theory.
Can I get a copy of it at tiasa.ghosh@warnowdesign.de?

Thank you,
Regards,
Tiasa
by Tiasa.Ghosh
Mon Nov 11, 2019 6:47 am
Forum: Computer-Aided Engineering Software Tools
Topic: Unable to access DTU 10MW FAST model
Replies: 0
Views: 2267

Unable to access DTU 10MW FAST model

Hello all, I have recently started using FAST with v8 and getting starting to understand its working. I have experimented with the Testcases available with FAST package. According to my current project need, I would also like to simulate the 10MW DTU wind turbine. I have searched the forum and found...
by Tiasa.Ghosh
Fri Nov 08, 2019 1:27 am
Forum: Computer-Aided Engineering Software Tools
Topic: DTU 10-MW Reference Wind Turbine
Replies: 83
Views: 43309

Re: DTU 10-MW Reference Wind Turbine

Hello all, I have recently started using FAST with v8 and getting starting to understand its working. I have experimented with the Testcases available with FAST package. According to my current project need, I would like to also simulate the 10MW DTU wind turbine. I have searched the forum and found...

Go to advanced search