Data center – DC17 – Internal
Study of thermo-aerodynamic flow conditions in a data center room
EOLIOS Ingénierie provided an overview of the thermo-aerodynamic conditions of the various phenomena taking place in the data center room in relation to IT processes and climate control systems.
Data center - DC17 - Internal
Year
2022
Customer
NC
Location
Spain
Typology
NC
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Project description
How does EOLIOS optimize data centers using CFD?
The challenge of such a project being the control of the particular thermo-aeraulic phenomena induced by the presence of hot aisles and cold aisles, as well as the evaluation of the efficiency of the air circulation which aims to server cooling. CFD studies have made it possible to visualize the different thermo-aeraulic phenomena of different cases of rebreather shutdown, which has allowed the optimization of HVAC treatment systems.
The digital twin of the data center studied in CFD takes up the air volumes, all the lines of servers, the lighting and the conductivity of the materials. All HVAC systems are modeled. The diffusion grilles have been modeled precisely in order to obtain the precise flow of air within the different air aisles. The creation of a very detailed digital twin allows us to perform calculations with great precision and thus quickly identify potential thermal problems.
By analyzing these results from a global or local perspective, we were able to propose solutions adapted to the various problems encountered.
Digital twin support model
Understanding thermo-aerodynamic phenomena inside the data center
CFD study of datacenter cooling systems: precise results thanks to fine resolution
All the servers could be modeled in CFD. Rebreathers, lighting, heat extraction fans, equipment systems and electrical power cabinets are all included in the design.
The finesse of CFD resolution enables us to obtain a complex temperature distribution that is, in the end, very close to real-life conditions. The speeds and temperature distributions at the recycler outlet, as well as the speeds and effects of heat exchanges in the hot and cold aisles could be captured with great precision.
Thus, the first simulations made it possible to understand the main thermal phenomena inherent in data centers and their cooling systems. Understanding these phenomena made it possible to quickly verify that the flow did not present any particular problems. Thus, the use of 3D models during the research phase made it possible toevaluate the energy consumption of the various recyclers and thus to size their inputs.
Searching for hot spots and extreme scenarios
What can digital data center modeling contribute to the design phase?
Numerical modeling of data centers allows designers to better predict the performance and behavior of systems and components in the data center. It also allows you to test different hardware and software configurations to ensure that they work properly and are optimized for a specific use. Digital modeling also provides a better understanding of current practices and future trends, allowing designers to make informed decisions when developing data centers.
In this way, the simulation CFD is a outit puissant for to detect hot spots in the event of an extreme scenario(heatwave, faulty air-conditioning systems, etc.).. Elthe permet from simuler the comportement from fluides and the morvement from l‘air à l‘intérieur from data center, at prenant at compte from facteurs tels that l‘emplacement from entrées and from spellies d‘air, the température and the vitesgo to from l‘air ambiant and the configuration and the tailthe from équipements. Visit analyseant visit rsultats obtenus, it is possible from recherdear visit hot spots of aeraulic origin, their sources and consequences.
Study of air speeds for different extreme scenarios
CFD simulation of the data center's hot and cold aisles
CFD simulations made it possible to represent the temperature zones at all points in space and thus to know precisely the dynamics of hot air expulsions as well as the zones where the temperature was higher. These studies have shown that the thermo-aeraulic dynamics allow sufficient mixing to keep the aisles warm at a target temperature.
Finally, a transient study was carried out in order to assess the temperatures close to the servers when a power outage occurs and the generator starts up. This temporal study makes it possible to analyze with precision whether during the time between the cut-off and the restarting of the ventilation systems, the temperature damages the electronic equipment.
Integrating CFD simulation into your design protocol means integrating a team of professionals with different perspectives in the search for solutions, thus guaranteeing the safety and reliability of your studies.
Digital data center twins
Video summary of the study
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