Search found 21 matches

by Jennifer.Rinker
Tue Feb 16, 2016 10:49 am
Forum: Computer-Aided Engineering Software Tools
Topic: DTU 10-MW Reference Wind Turbine
Replies: 83
Views: 43625

Re: DTU 10-MW Reference Wind Turbine

EDIT: The old site in my original comment is now out of date. The files are now hosted on a GitLab repository here: https://rwt.windenergy.dtu.dk/dtu10mw/dtu-10mw-rwt . Note that, however, the FAST files might not necessarily match the HAWC2 files released on http://www.hawc2.dk/download/hawc2-mode...
by Jennifer.Rinker
Wed Oct 21, 2015 4:47 pm
Forum: Computer-Aided Engineering Software Tools
Topic: How fine should a TurbSim mesh be?
Replies: 1
Views: 9785

How fine should a TurbSim mesh be?

Hello, I'm wondering if there is any sort of rule of thumb for "how fine" a TurbSim mesh should be. I know the total grid size is determined by my rotor (1.1*RotDiam for onshore turbines), but I'm wondering what values are good for the number of grid points. Has anyone done a sensitivity s...
by Jennifer.Rinker
Tue Oct 20, 2015 10:36 am
Forum: Computer-Aided Engineering Software Tools
Topic: AeroDyn Error: input values for DR not compatible
Replies: 1
Views: 8730

Re: AeroDyn Error: input values for DR not compatible

Figured it out. I was using a Python script to automatically generate the FAST and AeroDyn files from a dictionary of my turbine, and I didn't have enough precision in my hub radius so it was being rounded to 2.48 m in my FAST input file (attached). Silly me. Here's a quick list of things to check i...
by Jennifer.Rinker
Tue Oct 20, 2015 10:30 am
Forum: Computer-Aided Engineering Software Tools
Topic: AeroDyn Error: input values for DR not compatible
Replies: 1
Views: 8730

AeroDyn Error: input values for DR not compatible

Hi all, I've been re-making the FAST files for the WindPACT project and I came across the following AeroDyn error: "Input values for DR(:) are not compatible with input RElm(:)." It suggests changing my evenly-spaced elements to an alternating form: Input values for DR(:) are not compatibl...
by Jennifer.Rinker
Mon Mar 02, 2015 5:01 pm
Forum: NWTC Wind Data
Topic: How are you accessing/updating your wind data?
Replies: 4
Views: 9909

Re: How are you accessing/updating your wind data?

Hey all,

I've extended the work here in a Python script that will download new data or update old local data if the online modification date is newer than the local creation date. If you're interested, details are here: viewtopic.php?f=31&t=1256.

Cheers,
Jenni
by Jennifer.Rinker
Mon Mar 02, 2015 4:59 pm
Forum: NWTC Wind Data
Topic: Python Script to Update Local Copies of M4 Data
Replies: 0
Views: 7263

Python Script to Update Local Copies of M4 Data

Hi everyone, If anyone is interested, I have written and published a Python script that will update local copies of the M4 20 Hz/10 min data based on a) whether the local version exists and b) whether the online version has a newer modification date. The script works on Windows and should work on Li...
by Jennifer.Rinker
Thu Feb 19, 2015 11:00 am
Forum: Computer-Aided Engineering Software Tools
Topic: Compiling Turbsim
Replies: 10
Views: 7041

Re: Compiling Turbsim

Hello, I modified the build structure and techniques for compiling FAST (http://kom.aau.dk/~anb/fast/fastinstall.html, https://wind.nrel.gov/forum/wind/viewtopic.php?f=4&t=588&) to compile TurbSim on 64-bit Linux with gfortran. I've attached a PDF of instructions, and the build structure and...
by Jennifer.Rinker
Tue Nov 19, 2013 10:25 am
Forum: NWTC Wind Data
Topic: 20 Hz sonic data quality
Replies: 2
Views: 7188

Re: 20 Hz sonic data quality

Excellent, this addresses my concerns. Since most of the "spikes" in the raw data are from loss of communication, not from dust-storms or malfunction of the sonic, then I think I can use the interpolated records without issue. Thanks!
by Jennifer.Rinker
Tue Nov 19, 2013 10:11 am
Forum: NWTC Wind Data
Topic: Report all data, even if it fails tests?
Replies: 7
Views: 10924

Re: Report all data, even if it fails tests?

I've looked at the raw and cleaned/rotated sonic structures and in the tower structure in the 20 Hz .mat files from M4. The sonic structures have four fields (val, label, units, height) and the tower structure has several fields that are related to the sonics, but neither of them have any "flag...
by Jennifer.Rinker
Mon Nov 18, 2013 2:34 pm
Forum: NWTC Wind Data
Topic: 20 Hz sonic anemometer behavior
Replies: 6
Views: 9727

Re: 20 Hz sonic anemometer behavior

Hi Everett,

My observations are only from the M4 tower data; I've added notes in the other two threads about which data I am analyzing. Thanks for the note!

- Jenni
by Jennifer.Rinker
Mon Nov 18, 2013 2:28 pm
Forum: NWTC Wind Data
Topic: 20 Hz sonic data quality
Replies: 2
Views: 7188

20 Hz sonic data quality

Hello everyone (again), I have a question about the data quality for the 20 Hz sonic anemometers from the M4 tower. It seems that there are typically hundreds of "spikes" that occur in a given 10-minute record (see subplot 1 below), which are mostly removed in the cleaning process (see sub...
by Jennifer.Rinker
Mon Nov 18, 2013 2:07 pm
Forum: NWTC Wind Data
Topic: Spikes in cleaned, rotated 20 Hz sonic data
Replies: 0
Views: 6805

Spikes in cleaned, rotated 20 Hz sonic data

Hi everyone, Per my earlier post, I wanted to note that currently there seems to be some cleaned and rotated 20 Hz sonic records that still have "spikes" in the data. These spikes can range in width from 2 samples to around 6 samples, and might throw off some of your results if you are loo...
by Jennifer.Rinker
Mon Nov 18, 2013 1:57 pm
Forum: NWTC Wind Data
Topic: 20 Hz sonic anemometer behavior
Replies: 6
Views: 9727

Re: 20 Hz sonic anemometer behavior

Consider it done.
by Jennifer.Rinker
Mon Nov 18, 2013 1:44 pm
Forum: NWTC Wind Data
Topic: 20 Hz sonic anemometer behavior
Replies: 6
Views: 9727

Re: 20 Hz sonic anemometer behavior

Dear Andy, The spikes that I am concerned about range from 2 samples in width (0.1 seconds) to ~6 samples (0.3 seconds) and are presented in the Sonic_u data, so it's already been cleaned and rotated. For example, the first plot in the below image is the sonic-u data from Feb. 11, 2013 at 10:10 and ...
by Jennifer.Rinker
Fri Nov 01, 2013 10:23 am
Forum: NWTC Wind Data
Topic: 20 Hz sonic anemometer behavior
Replies: 6
Views: 9727

20 Hz sonic anemometer behavior

Hi everyone, I have a few questions about the 20 Hz sonic anemometer data that I thought I'd bring up on the forums. Please feel free to direct me where to find the answers, if applicable, rather than answer them yourself. 1) Some records still have "spikes" in the data after Andy's denois...

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