Where Should You Build Your Wind Farm? CFD Simulation Has the Answer.
Choosing the wrong location for a wind turbine can mean years of underperformance, increased mechanical stress, and costly maintenance. Wind energy developers have long relied on weather station data and general meteorological models to make these decisions. But real terrain is complex as mountain ranges, ridgelines, and valley channels create turbulence patterns that no average wind dataset can capture.
COA-CFD is changing that. Through cloud-based Computational Fluid Dynamics (CFD) simulation, wind farm planners can now model the precise airflow across an entire mountain range.
The Problem With Guessing
Traditional wind farm siting relies on long-period wind measurement data gathered from meteorological masts. Engineers extrapolate from that data to estimate average wind speeds and dominant directions at candidate turbine sites. The approach works reasonably well in flat terrain. In complex, mountainous landscapes, it falls short.
What’s missing is turbulence intensity that dictates fatigue loads on turbine blades, reduces energy yield, and shortens equipment lifespan. Turbulence in complex terrain is generated locally by the shape of the land itself: a ridge creates an acceleration zone on its windward face, a valley funnels air in ways no point measurement captures. Siting decisions made without this information are, at best, educated guesses.
Developers planning wind farms in mountainous regions are essentially making multi-million-euro decisions without a complete picture of the wind environment they’re building into.
What COA-CFD Simulates
The COA-CFD wind farm module performs high-resolution simulations of atmospheric boundary layer flow across complex topography. The simulation domain in current validation cases spans 10 km × 10 km with a vertical extent of 4 km, capturing the full landscape a wind farm would occupy.
The workflow is designed to accept real-world inputs from the user:
- Terrain topology, converted into a 3D domain geometry (STL format)
- Long-period wind speed measurement data from the project site
- Surface roughness parameters adjustable to reflect land cover (forest, open field, built-up areas)
- Wind direction data covering the full directional spectrum (16 sectors)
These inputs are combined into a time-varying boundary condition applied across the north, east, south, and west boundaries of the simulation domain. The solver then calculates how the wind evolves as it moves across the terrain.
What You Get as Output
The simulation delivers a spatially resolved picture of the wind environment at every point across the candidate site:
- Local wind speed at each simulated time step
- Average wind speed over the full measurement period mapped across the entire domain
- Turbulence intensity fields (critical metric for identifying high-stress zones and optimal placement locations)
The result is a map that tells you, with physical rigor, where wind conditions are most favorable for turbine placement and where elevated turbulence makes siting inadvisable.
This is a physics-based simulation of the actual wind field, derived from real topography and real measurement data.
Who Is This For?
The primary users of this module are organisations in the early planning stages of wind farm development such as developers, energy consultants, and engineering firms working in complex terrain. The tool is particularly relevant for:
- Projects in alpine or hilly regions where conventional siting methods are unreliable
- Sites where only limited measurement infrastructure exists
- Feasibility studies where rapid, cloud-accessible simulation can accelerate the decision process
Because COA-CFD runs in the cloud, the full simulation capability is accessible without on-premise HPC infrastructure or specialist CFD expertise. The platform is designed to be usable by engineers who understand wind energy, not only by CFD specialists.
Part of a Broader Vision
The wind farm simulation module is one application within the broader COA-CFD cloud platform, developed by an international consortium of partners under the CELTIC-Next programme. The project’s mission is the democratisation of CFD simulation, making physics-based engineering analysis accessible to SMEs and industrial users who previously lacked access to this level of capability.
In future versions of the platform, the wind farm module is planned to include a full graphical user interface, making the complete workflow from terrain upload to turbulence map output operable without any command-line interaction.
