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by Bonnie.Jonkman
Mon Jan 18, 2010 2:26 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Results comparison ADAMS and FAST
Replies: 9
Views: 5614

Re: Results comparison ADAMS and FAST

Hi, Juan. Jason is on travel so I will attempt to help answer your question. I suspect the problems you are having with ADAMS result from compiling the dll. I found a compiler compatibility matrix in one of MSC Software's technical articles ( http://simcompanion.mscsoftware.com/infocenter/index?page...
by Bonnie.Jonkman
Thu Dec 31, 2009 1:00 pm
Forum: Computer-Aided Engineering Software Tools
Topic: FAST compiled with G95- reading full-field wind
Replies: 6
Views: 2744

Re: FAST compiled with G95- reading full-field wind

Hi, Scott.

What kind of errors are you getting? Since the FF files are binary, one of the first things I'd check is that it's reading the bytes in the correct order.

Bonnie
by Bonnie.Jonkman
Tue Nov 24, 2009 2:17 pm
Forum: Computer-Aided Engineering Software Tools
Topic: IECWind
Replies: 12
Views: 4963

Re: IECWind

The comments at the top of the file appear to contain a mistake; however, the data describing the extreme operating gust look correct. If you plot the horizontal wind speed in the file (add columns 2 and 8), you will see the extreme operating gust. Compare it with what the IEC 61400-1 standard (3rd ...
by Bonnie.Jonkman
Wed Nov 04, 2009 3:52 pm
Forum: Computer-Aided Engineering Software Tools
Topic: IECWind
Replies: 12
Views: 4963

Re: IECWind

IECWind generates the discrete (i.e., non-turbulent) wind files for the IEC load cases specified in the 61400-1 standard. You can open the hub-height (HH) wind files generated in IECWind using a text editor to see what the specified wind is doing. The file you ran is the extreme direction change, wh...
by Bonnie.Jonkman
Fri Sep 25, 2009 5:58 pm
Forum: Inflow Turbulence
Topic: New Version of TurbSim Available on our Web Site
Replies: 0
Views: 5542

New Version of TurbSim Available on our Web Site

I have uploaded TurbSim version 1.50 to the NWTC Design Codes Web site. Along with the new version of the code, I've published an updated and significantly expanded user's guide, also available on the Web site. The guide includes many more figures, tables, and equations... and a quick-start guide fo...
by Bonnie.Jonkman
Thu Aug 06, 2009 5:18 pm
Forum: Computer-Aided Engineering Software Tools
Topic: binary .wnd specification
Replies: 11
Views: 4330

Hi Stefan,

I'm glad you got it working. Thanks for posting the code!
by Bonnie.Jonkman
Tue Aug 04, 2009 12:11 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Wind Data file called 90m_12mps for 5MW turbine example
Replies: 6
Views: 6491

Hi, The error in GetHHWind was generated when AeroDyn couldn't read the the hub-height wind file correctly. It tried to read 8 columns of numeric data, but encountered text or some other invalid characters. The first thing I'd check is that all of your comment lines start with "!". The fil...
by Bonnie.Jonkman
Tue Aug 04, 2009 11:30 am
Forum: Computer-Aided Engineering Software Tools
Topic: TurbSim Test Error
Replies: 2
Views: 1761

Hi, The scripts that read the TurbSim data were created using newer versions of Matlab than you are using. The textscan function in older versions works differently than the current version, and that seems to be causing the error you are getting. You can look at the MathWorks documentation for more ...
by Bonnie.Jonkman
Fri Jul 10, 2009 12:09 pm
Forum: Computer-Aided Engineering Software Tools
Topic: binary .wnd specification
Replies: 11
Views: 4330

Stefan, I have some Fortran code that can be used to create the .wnd files (and the .sum files that AeroDyn needs to read and scale the .wnd files). I put it on the website with the Matlab code. If you get a working Matlab script that creates the files (and you don't mind sharing with others), I wou...
by Bonnie.Jonkman
Wed Jul 08, 2009 9:49 am
Forum: Computer-Aided Engineering Software Tools
Topic: binary .wnd specification
Replies: 11
Views: 4330

Hi Stefan, I have a Matlab function that reads TurbSim's FF Bladed-style .wnd files (and associated .sum files). You can download it in the zip file at http://wind.nrel.gov/public/bjonkman/ . The file name is readBLgrid.m . Let me know if you need the text description as well. I have a description f...
by Bonnie.Jonkman
Mon Jul 06, 2009 4:27 pm
Forum: Computer-Aided Engineering Software Tools
Topic: IEC Wind
Replies: 1
Views: 3992

Hi Teddy, I'm not exactly sure I understand your question, but hopefully this will help. The IECWind program ( http://wind.nrel.gov/designcodes/preprocessors/iecwind/ ) creates the deterministic wind fields for the Extreme operating gust (EOG), Extreme direction change (EDC), Extreme coherent gust w...
by Bonnie.Jonkman
Mon Jul 06, 2009 1:21 pm
Forum: Inflow Turbulence
Topic: NREL 5MW Turbulent Grid Spacing
Replies: 5
Views: 10705

Scott.Larwood wrote: do you know of any studies on appropriate grid spacing? If not I think this would make for a useful research project.


This very project has been on my list for some time. Unfortunately, I haven't yet had the time to do it.
by Bonnie.Jonkman
Mon Jul 06, 2009 1:09 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Compiling Turbsim
Replies: 10
Views: 5579

Adam,

I know of a few people who have compiled TurbSim under Linux, but I think most of them use g95. As Marshall indicated, the SysVF.f90 file will have to be changed for the compiler you use. Unfortunately, I do not have source code for compilers other than VF.


Bonnie
by Bonnie.Jonkman
Fri Jun 19, 2009 10:13 am
Forum: Inflow Turbulence
Topic: NREL 5MW Turbulent Grid Spacing
Replies: 5
Views: 10705

Hi, We have been using 31x31 grids for the 5 MW model, which gives us a little better than 5-m resolution. The files are large (72 MB), but the 5 MW turbine is a large machine. Due to hardware memory requirements in the past, we've had to generate these files on a 64-bit Windows server, but I've rec...
by Bonnie.Jonkman
Thu Oct 23, 2008 11:59 am
Forum: Inflow Turbulence
Topic: TurbSim & Design Codes Update Workshops
Replies: 4
Views: 17086

Workshop Presentations Available

PDFs of the presentations from the TurbSim Workshop last month are located here: http://wind.nrel.gov/public/Kelley/TurbSim%20Workshop/WorkshopDocuments/ The presentations from the Design Codes Workshop are located here: http://wind.nrel.gov/public/Kelley/TurbSim%20Workshop/WorkshopDocuments/DesignC...

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