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MODEL

The MODEL module provides a collection of tools interfacing with external wind flow models like WAsP, WAsP CFD and other external CFD models. The MODEL tools are often used in combination with other modules like MCP, PARK and SITE COMPLIANCE. A popular tool in MODEL is the Resource map calculator. EMD’s own ATLAS model can also be used with this module.

  • Access to calculation models
    Interface with WAsP, WAsP-CFD, OFwind, external CFD tools and the ATLAS model
  • Create wind statistics
    Combine wind data and terrain information to create a wind statistics
  • Calculate a wind resource map
    Get a spatial overview of the wind resource, analyze the data, and use it as a wind model in a PARK calculation
  • VS
    Calculate production output
    Automatically iterate over different turbine types to see which one yields most production in a single point
  • Use the ATLAS model
    A very fast energy calculation model for simple terrain in a single point
  • MODEL Reports
    Create reports for the ATLAS, WAsP interface and RESOURCE calculations

WAsP Interface

Access to calculation models

The MODEL module contains a collection of tools used to interface with wind flow models to calculate the vertical and horizontal extrapolations on a site. Both calculations with WAsP, WAsP CFD and external CFD models are supported. The MODEL tools are often used in combination with other modules like MCP, PARK and SITE COMPLIANCE. A popular tool in MODEL is the Resource map calculator. EMD’s own ATLAS model can also be used with this module. Depending on the wind flow model used, different objects and information are required, for instance WTGs, Site Data, Line, Area, WTG Area, Obstacles and Meteo objects.

Create windstatistics

Create wind statistics (using WAsP, WAsP-CFD or external CFD)

A wind statistic is used in energy calculations and describes the wind as Weibull distributions and frequencies by height, direction sector and roughness. This concept is considered robust and fast – and have been used for decades. The MODEL module works together with WAsP to generate a wind statistic.

This requires a terrain description of roughness and elevation, assembled in a Site Data Object. This information is 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 results from WAsP-CFD calculated using the EMD cluster services or results calculated by external CFD models using the FLOWREQUEST/ FLOWRES data exchange formats.

Example of a rose view in windPRO showing the mean wind speed and direction for a wind statistic

Resource Map

Calculate wind resource maps (using WAsP, WAsP-CFD or external 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, analysed, compared and used as wind model for a PARK calculation.

Working with resource maps in windPRO

WAsP Interface

Calculation of production output (using WAsP, WAsP-CFD or external CFD)

For the calculation of the production output, the same terrain input or WAsP-CFD/external CFD software results are 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.

ATLAS model

Calculation using the ATLAS model

The ATLAS model is only recommended for calculating energy production in simple terrain. 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 requires pre-made wind statistics. 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.

Reports

MODEL Reports

Special reports can be produced for the ATLAS, WAsP interface and RESOURCE calculations.