The MODEL module contains a collection of tools used for wind flow modeling, to do the vertical and horizontal extrapolations on a site. The core models supported are WAsP and WAsP-CFD, the Industry standards in flow modeling. The MODEL tools are often used in combination with other modules like PARK, MCP and SITE COMPLIANCE. A popular tool is the Resource map calculator. EMD’s own ATLAS model can also be used with this module. Depending on the model used, different objects and information are required.
The MODEL module is not a calculation in itself, but gives access to a number of calculations with WAsP, CFD and ATLAS.
Please note that the objects (WTGs, Site Data, Line, Area, WTG Area, Obstacle and Meteo objects) are entered on the map. (cf. BASIS module for further details.)
Depending on the model used different objects and information are required.
Creation of wind statistic (WAsP or WAsP-CFD):
This will require a terrain description of roughness and elevation prepared in Area, Line and Obstacle Objects. These are assembled in a Site Data Object and sent to WAsP together with wind data from a Meteo Object or an MCP calculation. In complex terrain, the terrain description can be replaced by WAsP-CFD results. in order to get a wind statistics can also be calculated with WAsP CFD results
Calculation of production output (WAsP or WAsP-CFD):
For the calculation of the production output, the same terrain input or WAsP-CFD results is used as above with the addition of a wind statistics. The calculation can be made for a single point using a range of wind turbine types or for a wind farm in a PARK calculation defined by a layout created using WTG Objects.
Calculation of wind resource map (WAsP or WAsP-CFD):
The same terrain description and (multiple) wind statistics can be used to calculate a wind resource map.
An irregular shaped area for the map can be defined with a WTG Area Object. The resulting resource map can be presented on the working map, analyzed, compared and used as wind model for a PARK calculation.
To run an ATLAS calculation a roughness and an elevation model are needed. These can either be defined directly in a Site Data Object or created based on topography data (roughness lines and height contours or grid).The ATLAS model is unable to create wind statistics so pre-made wind statistics are needed. The ATLAS model is integrated in windPRO so no additional software is needed. ATLAS can either be calculated for a single turbine or used as input for a wind farm in a PARK calculation.
The interface allows to call for wind flow models such as WAsP and/or WAsP-CFD. If WAsP is registered on the same computer, it can run from windPRO using windPRO as a user frindly and multipurpose interface. WAsP-CFD requires moreover access to computational resources to be purchased as credits (more details available here http://www.emd.dk/windpro/wasp-products/wasp-cfd/).
The wind models are used for the calculation of:
- wind statistics based on measurements(possibly as a result of long-term correction MCP)
- production output for single turbine with WAsP Interface calculation or for a wind farm in combination with PARK module
- a wind resource map that can be analyzed and compared on the working maps. Resource maps can also be used for PARK calculations.
Finally the MODEL module gives access to the ATLAS calculation model. The ATLAS model (not to be confused with the WAsP wind atlas model) is a simple wind model calculator made by EMD for calculating production in simple terrain using one calculation point and a pre-made wind statistics. The modules allows a number of calculation calls directly and facilitate expanded use of other modules (PARK, MCP, OPTIMIZE).
Special reports are produced for the ATLAS, WAsP interface and RESOURCE calculation.