Search found 556 matches

by Bonnie.Jonkman
Wed Jul 08, 2009 9:49 am
Forum: Computer-Aided Engineering Software Tools
Topic: binary .wnd specification
Replies: 5
Views: 3426

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: 3685

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: 10275

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: 8
Views: 4454

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: 10275

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: 16699

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...
by Bonnie.Jonkman
Tue Sep 30, 2008 11:17 am
Forum: Inflow Turbulence
Topic: TurbSim v1.40 available
Replies: 0
Views: 6370

TurbSim v1.40 available

Hello Design Codes Users, TurbSim version 1.40 has been uploaded to the NWTC Design Codes web site. Version 1.40 includes some changes to the summary file and to calculations of parameters in all the non-IEC spectral models. The calculations in the IEC models have not changed, nor are there any chan...
by Bonnie.Jonkman
Thu Sep 04, 2008 12:00 pm
Forum: Inflow Turbulence
Topic: TurbSim & Design Codes Update Workshops
Replies: 4
Views: 16699

Dear Wind Turbine Modeling Enthusiasts, Thank you to all who have already registered for the upcoming TurbSim and Design Codes Workshops. For those of you who are planning to attend but have not yet registered, please remember to send your completed registration form to Bonnie Jonkman by Friday, Sep...
by Bonnie.Jonkman
Tue Aug 19, 2008 6:30 pm
Forum: Inflow Turbulence
Topic: TurbSim & Design Codes Update Workshops
Replies: 4
Views: 16699

Registration for the TurbSim and Design Codes Workshops

Dear Wind Turbine Modeling Enthusiasts, We have been making further plans for the TurbSim and Design Codes Workshops to be held at the National Wind Technology Center September 22-25, 2008. If you are planning to attend, please complete the registration form and return it to Bonnie Jonkman by Septem...
by Bonnie.Jonkman
Fri Aug 15, 2008 10:56 am
Forum: Inflow Turbulence
Topic: TurbSim & Design Codes Update Workshops
Replies: 4
Views: 16699

Further details (including a registration form) regarding the upcoming TurbSim and Design Codes Workshops at the NWTC will be sent out next week.

Stay tuned....
by Bonnie.Jonkman
Tue Jul 15, 2008 9:27 am
Forum: Inflow Turbulence
Topic: Turbsim IECturbc Parameter
Replies: 2
Views: 7057

When you specify a turbulence intensity (I) in TurbSim's IECturbc parameter, the standard deviation is calculated by sigma_1 = V_hub*I/100.
by Bonnie.Jonkman
Fri Apr 04, 2008 6:02 pm
Forum: Inflow Turbulence
Topic: TurbSim v1.30 available
Replies: 0
Views: 6507

TurbSim v1.30 available

I have uploaded a new version of TurbSim (v1.30) to the NWTC Design Codes web site. You can download it at http://wind.nrel.gov/designcodes/preprocessors/turbsim/ . Version 1.30 contains two new inputs to the input file. The first is a true/false switch that allows the user to scale the output of th...
by Bonnie.Jonkman
Mon Mar 05, 2007 3:50 pm
Forum: Inflow Turbulence
Topic: TurbSim v1.21 available on the NWTC Design Codes website
Replies: 0
Views: 14537

TurbSim v1.21 available on the NWTC Design Codes website

A new version of TurbSim is now available at http://wind.nrel.gov/designcodes/preprocessors/turbsim/. TurbSim v1.21 incorporates new coherent structure scaling for the three wind farm models (WF_UPW, WF_07D, and WF_14D) and fixes a problem Marshall Buhl found when generating binary *.bts files with ...
by Bonnie.Jonkman
Fri Oct 27, 2006 10:32 am
Forum: Inflow Turbulence
Topic: TurbSim v1.20 available on the NWTC Design Codes website
Replies: 0
Views: 11274

TurbSim v1.20 available on the NWTC Design Codes website

A new version of TurbSim is now available at http://wind.nrel.gov/designcodes/preprocessors/turbsim/. TurbSim v1.20 incorporates new spectral scaling for the NWTCUP model, based on measurements from the NWTC LIST experiment. In previous versions of the code, the NWTCUP model used spectra from the wi...
by Bonnie.Jonkman
Tue Apr 04, 2006 1:25 pm
Forum: Inflow Turbulence
Topic: Changing the wind directions when using Turbsim
Replies: 3
Views: 10392

Hi, There is a wind direction input in TurbSim that changes the mean wind direction, but the direction must be constant for the wind file. I don't recommend using this feature with grids to be used in AeroDyn because the turbulence grids march through the turbine, in the x-direction, at the hub-heig...

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