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  2. Hi Igarcia The mast must be covered with a WAsP CFD tile to calculate the generalized wind climate Kind regards, Andreas
  3. Hello there, I got data of the Mars (longitude, latitude and elevation) from the Global Mars Surveyor. Longitude and Latitude are vectors and the elevation is a m x n matrix. It is possible to create a map that I can use for the Map Editor? Maybe with Matlab or a different program? Hopefully someone can help me creating a map out of the data for WAsP 🙂 Thank you in advance! velcame
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  5. Hi, I am planning to do a WASP CFD calculation. I saw in the wasp course that the met mast must be covered with a tile too (besides covering the wind turbines). I am guessing that for validation purposes it is useful, but since the CFD solver only takes into account terrain features, do I really need to cover the met mast with a tile? Also, I have several met masts for this particular case. Thank you!
  6. Rogier

    Forest height

    Yes, I would do both, adding elevations to the existing map and extracting a height from your input wind climate. You then have to make sure to have the correct displacement height for all your turbines as well. Adding/subtracting the height from the turbines/climate is likely to have the biggest impact. And make sure to double check because I know from experience it is easy to make a mistake in this manual process.
  7. igarcia

    Forest height

    Hi, Thank you very much for your fast reply, it was very useful. Do you recommend introducing the displacement height in the altimetry map in the map Editor, rather than substracting it to each turbine hub height in WASP?
  8. Rogier

    Forest height

    Hi, We are currently working on a forest implementation where it will be possible to easily ingest displacement heights into WAsP. We have recently published a paper about this that might be useful: https://wes.copernicus.org/preprints/wes-2021-28/ All these routines are unfortunately not yet available in a user-interface, but planned probably somewhere this year. As a rule of thumb you can use what is written there: displacement = (2/3)*tree height and roughness = 0.1*tree height. You could use these rules to create a roughness and displacement map from the layer you found. Th
  9. igarcia

    Forest height

    Dear Wasp team, I am in the process of modelling a wind farm that is located in a forest, so I have some questions regarding this topic: - First of all, what do you recommend to get the canopy height in order to calculate the displacement height? I have found this database: https://glad.earthengine.app/view/global-forest-canopy-height-2019 but I would like to know if you have recommendations on how to measure this value (besides going to the location and measuring, of course). - Secondly, I would like to know what is the canopy height at which we should start considering the ar
  10. Thank you very much Mark for your answer. I assume then that the better way to output the speed and see vertical extrapolation only dependent on height (and avoiding or mostly avoiding roughness and offset heat flux parameter corrections), would be to put a test wind turbine on the same location, with different hub heights, is that right? Thank you very much again. Best, Andrés
  11. Hello Andrés, I should first note that WAsP does not use a shear exponent for vertical extrapolation. Rather, it uses geostrophically-perturbed similarity theory (i.e. roughness-based with 2 stability parameters, also an adjustment for the upper atmospheric boundary layer). The WAsP method does vertical extrapolation for both the Weibull-A and k parameters, which are linked; it is not a "wind profile" per se. It is not designed for shear. However, if you like, you could simply output the speed (or Weibull-A) at 2 heights, and then calculate the shear using alpha = ln(U_2/U_1
  12. Hi all, I am currently running a simulation of a wind farm and nearby wind farms with different hub heights. I would like to understand and obtain the wind shear exponent that WaSP is using for doing vertical corrections. Is it possible to obtain such data, maybe roughness/height dependant? Thank you very much!
  13. Hi Erkan, Both of the attached WindPRO error messages say “project class failed to create a new project instance” which indicates a problem with the installation. I also see a button called “show bug report” and I guess that you will get detailed information when you press that. If that does not help you, I suggest that you contact WindPRO support. If I read your question correctly, you were able to calculate with WEng 4.0, but now are having problems going back to WEng 3.1. I don't know whether the two versions are supposed to co-exist under a WindPRO installation. If you were runn
  14. While I was working one of my WPP project with Windpro the Site Comliance WEng calculation did not work with high resolution with WEng3.1. I realized that maybe WEng4.0 could made this calculation and I plugged out from WEng3.1 & plugged in WEng4.0. After all, I need to continue my calculation for my other projects, WEng3.1 did not work and it gives an error something like that; Error 1; https://attachment.freshdesk.com/inline/attachment?token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpZCI6MjA0MzIwODQxMDY5OCwiZG9tYWluIjoiZW1kaGVscC5mcmVzaGRlc2suY29tIiwiYWNjb3VudF9pZCI6MTAzODAxNn0.0
  15. Hi, I am creating an Observed Wind Climate in Wasp Climate analyst and I have data for 6 years, and some of them are non consecutive. For example, I have 2012 and 2014 but not 2013. When I choose view selected data, WACA "joins" the last measurement from 2012 to the first one from 2014 to recreate 2013 data. Is this right? I dont want the program to do this. How can I use these years as independent data? Thank you very much Inés
  16. Hi vob, There is no such thing as a stupid question ;-) I agree that the WAsP help file describes the default 12-sector setup only when it comes to RSF/WRG files. This is not a limitation of the software. The limitation is 36 10-degree sectors in the OWC and therefore also in the results. WAsP 12 will happily export 36-sector resource grids to RSF files. Thanks for your question; we'll update the help file accordingly in the next version. Best regards, Niels
  17. Hi all, perhaps a very stupid question, but how many sectors are allowed for well-formatted WRG/RSF files? The WAsP documentation appears to put no limit to the sector count as long as it fits into columns 70-72, while freq/A/k entries are specified for exactly 12 sectors in columns 73-228. Does it mean that WRG files should always have 12 sectors (then why do we need to specify the sector count)? Or may we use arbitrary numbers of sectors? Then the documentation should indicate that more columns may be added beyond the k value for sector 12. Thanks!
  18. Hi Jenny, I have WAsP 12.5.8 installed too and I can open and view the Palette Gallery by navigating to Tools > Options > Resource grids > ... The default palette files seem to be installed in C:\Program Files (x86)\WAsP\Samples\PaletteFiles.zip, but the software still points to "...\Documents\WAsP samples\Palette files" and can import files from here. The help file seems not to be updated on this point, sorry. Finally, I have no problems synchronizing to Google Earth Pro 7.3.3.7786, which is the version I use. Seems to me your WAsP installation is somehow not in order; have you tried to rein
  19. Hi, where the default color palettes should be located? I have WAsP 12.5 and it's not possible to change coloring of the resource grid results (palette gallery is empty). According to guidelines the palette files should be located in the path '..\Wasp\Sample data\Palette files' but I my case files are in the path' C:\Program Files (x86)\WAsP\Samples\' in zipped file. Another weird is that the button "sycronize view with virtual globe" in the spatial view window try to open the view in adobe acrobat.. How could I change this or where I would find the kml file?
  20. Dear CA1, I totally agree, but unfortunately we still have not implemented anything like this in WAsP for Windows. You can get some information from, say, the Global Wind Atlas 3 which can show typical yearly, monthly and daily variations of the wind resource. Best regards, Niels
  21. Dear Pedro, No, only if you specify an obstacle member of the hierarchy. The mast itself will provide some flow distortion and 'shelter', but that is not treated at all by the obstacle model. However, you can insert User corrections in the hierarchy, if you have information about such effects.
  22. Ok, so in that case the reason why you won't get the same values is indeed due the the modelling. The most common causes are the roughness length of the terrain (if it is too high you will get a too high wind resource). Also the default stability used in WAsP could be off (mostly the offset heat flux in profile model). If these things are wrong you will not be able to reproduce the wind climate from one height to another, so it is worth spending some time investigating what could changed.
  23. I have already figure that out
  24. Hi! I am just starting to use Wasp for the first time. I want to try the step by step example offered in the Quick Start Tutorial. However, I can´t find the waspdale archives (the OWC, .MAP nor the airport.obs) that I need for the "step by step example". I have found other archives named Canela, Langeland and Serra santa Luzia but not ones related to the Waspdale example. Please, It would be so helpfull for me if someone could sent me those waspdale archives (.owc + .map + obstaclearchive) that I need for the Quick Star Tutorial. Thanks
  25. Hi Rogier, thanks for your answer. In fact, I have two time series, each one corresponding to a different measurement height (60 m and 100 m) in the same met mast, that is to say, I have two anemometers. So, in order to get a comparison between the GWC associated to each one of those anemometers, I used WAsP to calculate the AEP for the same wind farm twice, with the GWC generated. The analysis showed that there are remarkable differences whenever I change the GWC, even if they correspond to the same met mast, but at different heights. My question is: is that difference due to any vertical
  26. Hi Lucas, I am not sure if I understand your question correctly, but it seems like you are applying the same time series twice to get a GWC? You will need to use the 'true' height where your time series was measured and insert this in the WAsP program. I.e. if you have a measured time series from a height of 60 m, you will get different results when you use this time series with an input height of 100 m. You will need the GWC that was generated using the real height of 60 m, otherwise WAsP will think the wind speed of 60 m was valid at 100, giving you much lower values in the GWC.
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