Wind comfort, structural safety, air pollution, aerodynamics and wind potential: the climatic phenomena of cities and neighbourhoods, modelled with precision through CFD simulation.
EOLIOS sets out to answer every question raised by the climatic phenomena that develop at the scale of cities and neighbourhoods. Our team brings together engineers and urban planners with a cross-cutting perspective, to arm cities against climate change.
Our expertise in fluid mechanics allows us to support you on pedestrian wind comfort, urban heat islands, small-scale wind power and the wind safety of buildings and structures — right up to the risk of trains overturning on viaducts. We also carry out air pollution studies and aerodynamic and acoustic passage studies, notably for rail.
Our services rely on CFD simulation and 3D modelling to quickly visualise wind speed, gusts, the Venturi effect, pollutant dispersion and pressure loads in any zone. Our studies analyse issues of comfort, safety and air quality in order to propose the best solutions.
From the microclimate of neighbourhoods to the safety of structures, each expertise falls within one of our five poles.
Fourteen areas of expertise grouped into five poles — select a pole to explore its scope.
Comfort and safety of pedestrians and terraces against wind in the city.
View this expertise → 01·City & urban climateLondon, Lawson, Davenport, NEN 8100 criteria and comfort maps.
View this expertise → 01·City & urban climateThermal impact of the urban fabric and cooling strategies.
View this expertise → 02·Wind safety & structuresPressure loads and design to Eurocode 1.
View this expertise → 02·Wind safety & structuresExtreme wind loads on panels and photovoltaic farms.
View this expertise → 02·Wind safety & structuresSite effects and overturning risk on viaducts and railway lines.
View our studies → 02·Wind safety & structuresWind thresholds for the protection and control of shades and blinds.
View this expertise → 03·Pollution & air qualityDispersion of plumes, odours and exhausts at urban scale.
View this expertise → 03·Pollution & air qualityFine particles and the piston effect of trains underground.
View this expertise → 03·Pollution & air qualityAir renewal and exposure to indoor pollutants.
View this expertise → 03·Pollution & air qualityWind-driven transport of sand and dust around structures.
View this expertise → 04·Aerodynamics & acousticsDrag coefficient and aerodynamic optimisation (sport, motorsport).
View this expertise → 04·Aerodynamics & acousticsDrafting effect and echelons in a cycling peloton.
View this expertise → 05·Wind potentialWind resource and siting of small wind turbines in cities and on rooftops.
View this expertise →Click a step to expand it: what we analyse, and what we deliver.
Every study follows a rigorous protocol, calibrated on real measurement campaigns and a hundred or so simulated sites.
Site plans, the site wind rose and local weather data.
3D geometry, mesh refined around critical zones.
Dominant sectors weighted by the wind rose.
High-fidelity turbulence on compute servers.
Fields, bottlenecks and quantified recommendations.
A selection of CFD studies on wind, comfort, pollution and aerodynamics.
ComfortPedestrian comfort — La Défense
RooftopRooftop comfort — Royal Mansour, Casablanca
High-riseTour Liberté — La Défense
SolarExtreme winds — solar farm
MetroFine particles — metro station
SolarWind-erosion control — solar power plant
ParticlesFine dust measurements
MotorsportAerodynamics — Formula 1
CyclingAerodynamics of a peloton
CityUrban heat island
In-depth articles and videos from our CFD software.
London, Lawson, Davenport, NEN 8100: criteria and comfort maps.
Learn more →
Simulation and modelling: excellent alternatives to physical testing.
Learn more →Drag coefficient, Reynolds, boundary layer and lift.
Learn more →Drag, drafting effect and the echelon phenomenon.
Learn more →Technical papers and fundamentals of the air & wind domain.
Learn more →
The stack effect: density, gravity and air set in motion.
Learn more →Fast, accurate simulations from the most powerful CFD software.
At EOLIOS Ingénierie, we specialise in CFD simulation of the action of wind on buildings and their surroundings. Based in France, with offices in London, Milan, Munich, Madrid, Warsaw, Casablanca and the USA, our firm supports architects, developers and engineering offices in mastering wind comfort, wind loads and air quality.
CFD simulation makes it possible to visualise and analyse wind speed, gusts, the Venturi effect and pollutant dispersion with precision: pedestrian comfort mapping (London, Lawson, Davenport, NEN 8100), pressure loads to Eurocode 1, air quality in cities and metro stations, urban heat islands and advanced aerodynamics. Our LES models reproduce turbulence with high fidelity.
Pedestrian comfort — La DéfenseView the project
3D streamlinesView our projects
From the high-rise tower to the solar farm, from the urban district to elite sport, every study is carried out by our doctor-engineers with a clear, actionable deliverable — to guarantee the comfort, safety and air quality of your projects, in France and internationally.
Wind studies rely on the expertise of a team of doctor-engineers in fluid mechanics, recognised in their discipline. Specialists in CFD simulation and turbulence modelling (LES), our engineers support architects, developers and engineering offices at every stage of a project: design, wind comfort, regulatory loads or expert assessment.
Originally founded in France, EOLIOS Ingénierie is today a benchmark consultancy in wind and aerodynamics simulation, in Europe and worldwide. Present in Paris, London, Milan, Munich, Madrid, Warsaw, Casablanca and the United States, we work on all kinds of wind-exposed projects — combining sharp scientific expertise, high-performance computing tools and a mastery of building aerodynamics.
Recognised scientific expertise, a lead doctor per discipline.
Towers, districts, solar farms, exposed structures and sport.
Local support for your international projects.
The simplest thing is to talk it through together. Our engineers reply with an initial technical read.