Creating wind speed without turbulent

Provide feedback, request enhancements, and get help with wind-turbine computer-aided engineering tools.

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Omid.Bagherieh
Posts: 20
Joined: Wed Feb 22, 2012 4:21 pm
Organization: University of British Columbia
Location: Canada

Creating wind speed without turbulent

Postby Omid.Bagherieh » Sun Mar 04, 2012 9:04 pm

Hi,
Does any one know how can I make a ramp wind speed (in time) or step wind speed(in time) with Turbsim?
I can make a constant wind speed by putting "TurbModel" to "none", but by selecting other options under "TurbModel" the wind become turbulent.
Thank you
Omid

Jason.Jonkman
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Joined: Thu Nov 03, 2005 4:38 pm
Location: Boulder, CO
Contact:

Re: Creating wind speed without turbulent

Postby Jason.Jonkman » Mon Mar 05, 2012 6:41 am

Dear Omid,

TurbSim is a tool used to generate full-field turbulent wind data files for use by AeroDyn. If all you need is simply wind ramps or wind steps, you can manually create your own wind data files using AeroDyn's "hub-height" wind file option. The hub-height file can be time-varying, but it assumes uniform (or sheared) flow over the rotor disk. See the AeroDyn User's Guide for more information.

Best regards,
Jason Jonkman, Ph.D.
Senior Engineer | National Wind Technology Center (NWTC)

National Renewable Energy Laboratory (NREL)
15013 Denver West Parkway | Golden, CO 80401
+1 (303) 384 – 7026 | Fax: +1 (303) 384 – 6901
nwtc.nrel.gov

Omid.Bagherieh
Posts: 20
Joined: Wed Feb 22, 2012 4:21 pm
Organization: University of British Columbia
Location: Canada

Re: Creating wind speed without turbulent

Postby Omid.Bagherieh » Mon Mar 05, 2012 8:30 pm

Dear Jason,
Thank you so much for your response.
Omid

KumaraRaja.Eedara
Posts: 24
Joined: Mon Sep 12, 2016 8:34 pm
Organization: IIT Bombay
Location: Mumbai

Re: Creating wind speed without turbulent

Postby KumaraRaja.Eedara » Tue Jul 16, 2019 2:29 pm

Dear Jason,

I want to create a uniform wind (i.e same wind speed across the disk) and also constant with respect to time. To create uniform wind file I've selected 2 for 'wind type' in "InflowWind.dat". This requires '***.hh' as input right? As per my understanding AeroDynV13 has this option to generate hub-height files but not the later versions. Is this true? Also through documentation, I learnt that AeroDynV13 cannot be run stand-alone but only with aero-elastic simulator. Correct? Please suggest if there is an easy way to create uniform and steady wind profile. Thanks.

Regards,
Kumara

Jason.Jonkman
Posts: 4223
Joined: Thu Nov 03, 2005 4:38 pm
Location: Boulder, CO
Contact:

Re: Creating wind speed without turbulent

Postby Jason.Jonkman » Tue Jul 16, 2019 3:10 pm

Dear Kumara,

Set WindType = 1 to create wind inflow that is steady (constant in time) and uniform (constant in space).

When using WindType = 2, wind is specified via a simple text-based file, which is described in the InflowWind User's Guide: https://wind.nrel.gov/nwtc/docs/InflowWind_Manual.pdf. This is not created by AeroDyn, but can be created by hand.

We do not have a standalone wrapper / driver for AeroDyn v13. However, this does exist for AeroDyn v15--see: https://nwtc.nrel.gov/AeroDyn.

Best regards,
Jason Jonkman, Ph.D.
Senior Engineer | National Wind Technology Center (NWTC)

National Renewable Energy Laboratory (NREL)
15013 Denver West Parkway | Golden, CO 80401
+1 (303) 384 – 7026 | Fax: +1 (303) 384 – 6901
nwtc.nrel.gov

KumaraRaja.Eedara
Posts: 24
Joined: Mon Sep 12, 2016 8:34 pm
Organization: IIT Bombay
Location: Mumbai

Re: Creating wind speed without turbulent

Postby KumaraRaja.Eedara » Wed Jul 17, 2019 12:28 am

Thanks, Jason. The post mentioned below from viewtopic.php?f=4&t=908&p=4229 is really helpful.

Jason.Jonkman wrote:Dear Yiqing,

For simple wind time histories, such as step changs in the wind speed, AeroDyn's simple "hub-height" format wind data file can be used in place of wind files generated by TurbSim. Please find an example of such a file attached.

Best regards,


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