A consultancy specialised in CFD simulation engineering for data centers and the creation of thermal digital twins.
Whether you are designing a new data center, looking to solve a problem on an existing site or planning a future IT deployment, we can help. EOLIOS sets out to answer every question raised by the thermal phenomena found in data centers.
Our services rely on the design of digital twins and the use of computational fluid dynamics (CFD) to quickly visualise flow velocity, density, thermal influence and chemical concentration in any zone. Our studies analyse safety, energy and air-quality issues in order to propose the best solutions.
From the electronic component to the site environment, each CFD area of expertise belongs to one of our five poles.
Eleven areas of expertise grouped into five poles — select a pole to explore its scope.
01 · IT roomsHot/cold aisles, recirculation, rack inlet air temperature.
01 · IT roomsA real-time virtual replica of all your equipment and airflows.
01 · IT rooms · to comeBoards, racks and cabinets: conduction, convection, radiation, liquid cooling.
02 · EnvelopeThermal plumes, generator sets and rooftop exhausts depending on wind and weather.
02 · EnvelopeImpact of thermal exhausts on the environment and air quality.
03 · EnergyReducing recirculation and consumption, PUE calculation.
03 · EnergyStorage-tank design, limiting temperature losses, inlets and outlets.
04 · Fire safetySmoke propagation, automatic gas extinguishing (IEAG), fire safety.
05 · AuditSmoke tests, thermography and 3D modelling of existing data centers.
05 · AuditThermal optimisation of UPS, STS and transformer rooms.
05 · AuditModelling load banks ahead of commissioning tests.
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.
Drawings, power loads, CRAH configuration and measurement campaign.
3D geometry, mesh refined around critical zones.
Nominal, ramp-up and critical failures.
Server-side solving: transient and steady-state regimes.
Fields, bottlenecks and quantified recommendations.
A selection of the CFD studies carried out for operators, designers and project owners.
Digital twinData center study — Data Hall & UPS rooms
HyperscaleExternal & internal CFD — Hyperscale
OptimisationCFD optimisation — Data Center
InternalData Center — DC28 — Internal
Technical roomsTechnical rooms — Data Center
CoolingCooling optimisation — Data Center
ExternalData Centers — DC15.1 & DC15.2 — External
Smoke controlSmoke-control engineering in a data center
ExternalDC23 — External
ExternalPA22 — Meudon
ExternalData Center — Paris
FireNOVEC gas — SAMU95
In-depth articles and videos from our CFD software.
Innovative solutions for data center climate management.
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Automatic gas extinguishing systems to put out a fire effectively.
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A real-time virtual replica of all a data center's equipment.
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CFD simulation and modelling: excellent alternatives to physical testing.
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Will the cooling handle 100% of the thermal load?
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Architecture, redundancy and critical systems explained.
Learn more →Fast, accurate simulations from the most powerful CFD software.
At EOLIOS Engineering, we specialise in data center CFD simulation and the creation of digital twins. Based in France, with offices in London, Milan, Munich, Madrid, Warsaw, Casablanca and the USA, our firm helps companies optimise server-room cooling, manage airflow and thermally model their data centers.
Thanks to our cutting-edge tools and expertise, we help you improve the reliability, safety and energy efficiency of your critical infrastructure.
CFD simulation of airflow makes it possible to visualise and analyse airflow, thermal distribution and overheating zones in your installations with precision. This approach offers many advantages:
Airflow analysis in the server room to detect hot spots.
Study of server heat dissipation to anticipate failure risks.
Simulation of airflow at the server racks to optimise layout and ventilation.
Cooling optimisation to reduce your energy costs.
By integrating these analyses, your teams make informed decisions and ensure optimal performance of your IT equipment.
One of the major challenges of data centers is energy consumption. Thanks to our services, you benefit from:
PUE calculation by CFD modelling to measure the energy efficiency of your infrastructure.
Thermal-storage study to maximise resource usage.
Simulation of chilled-water loops to ensure optimal cooling.
Simulation of heat-rejection systems to limit environmental impact.
These solutions cut costs while strengthening the reliability of critical systems.
The security of data and infrastructure relies on anticipating risks. EOLIOS offers:
Fire simulation and fire-risk modelling.
Analysis of critical scenarios and failure scenarios.
Study of airflow reliability in emergency situations.
Urban heat-island study to assess the overall environmental impact.
Our studies help design robust, secure solutions tailored to your constraints.
Our approach is built on close collaboration with our clients. We offer:
Audit and diagnosis to assess your installations.
CFD study for commissioning load benches to validate your projects before operation.
Modelling of electrical technical rooms to secure your equipment.
Every study is carried out by our expert engineers with a clear, actionable deliverable.
Since its creation, EOLIOS Engineering has been a pioneer in applying CFD to buildings and industry. Our highly qualified team puts its expertise at the service of data centers in order to:
Guarantee the performance of your infrastructure.
Improve your energy efficiency.
Reduce your operating costs.
Anticipate risks and strengthen your safety.
We combine scientific rigour, innovation and client proximity to support you in your projects in France and internationally.
Data center studies and design rely on the expertise of a team of expert engineers in fluid mechanics, recognised in their discipline. Specialists in CFD simulation and thermal digital twins, our engineers support operators, designers and project owners at every stage of a data center's life: design, optimisation, renovation or extension.
Originally founded in France, EOLIOS Engineering is today a benchmark consultancy in thermal and airflow simulation for data centers, in Europe and worldwide. Present in Paris, London, Milan, Munich, Madrid, Warsaw, Casablanca and the United States, we work on critical infrastructure wherever it is built — combining sharp scientific expertise, high-performance computing tools and a fine understanding of the data center ecosystem.
Recognised scientific expertise, a lead expert per discipline.
A hundred or so data centers simulated, from IT room to hyperscale.
Local support for your international projects.
The simplest thing is to talk it through together. Our engineers reply with an initial technical read.