Role of CFD Analysis in Optimizing Data Centre Performance
The data center sector is undergoing a significant transformation, fueled by the rising demand for high-performance computing (HPC) and artificial intelligence (AI) applications, which is pushing computing densities to new heights.
This escalation in power density greatly amplifies the cooling demands necessary to avert overheating and potential downtime. In response to these challenges, data centers are increasingly adopting hybrid cooling systems that integrate traditional air cooling with liquid cooling, proving to be an effective approach for managing these heightened thermal loads.
Hybrid cooling solutions enable data center operators to manage these elevated temperatures without the need for complete retrofitting of current facilities, facilitating a gradual and cost-efficient method for incorporating liquid cooling tailored to specific high-heat applications.
Objective of conducting CFD analysis for Immersion cooled data center
Our Client manages a diverse portfolio of innovative IT companies operating in 70 countries across Europe, the Middle East, and Africa. They provide a range of services including managed IT services and consultancy, system integration, cloud and data center solutions, software and hardware offerings, as well as technology distribution.
Scope of this contract is to create a 3D CAD model in accordance with the requirements of computational fluid dynamics (CFD) analysis, develop an appropriate CFD mesh, and carry out a thorough CFD analysis for a hybrid-cooled data center featuring 16 close control air conditioning units (CCUs), including two backup units. The CFD analysis was performed using five distinct redundancy configurations, and a detailed CFD analysis report, encompassing observations, conclusions, and recommendations, was provided as the final output.
CFD analysis results
Maintaining efficient airflow within data center racks is essential for ensuring optimal equipment performance, effective heat removal, and extended server lifespan. The data center comprises a total of 18 CCU units, of which 2 are designated as redundant units to provide operational flexibility and enhance cooling system reliability. The remaining 16 CCU units operate to distribute conditioned air across the 16 rows of racks, ensuring adequate airflow to meet the cooling requirements of the IT equipment. CFD analysis has been performed to evaluate airflow distribution under various combinations of CCU operation. The results indicate that the airflow distribution within the data center is satisfactory, demonstrating that the cooling system can effectively distribute conditioned air across the rack rows under the operating conditions considered. This assessment helps evaluate the overall airflow behaviour and the effectiveness of the existing CCU configuration in meeting the data centers cooling requirements.
CFD Results: Temperature in the data center
CFD analysis has been carried out to evaluate airflow distribution and temperature patterns within the data center under various combinations of CCU operation. The results indicate that the airflow distribution throughout the data center is satisfactory, ensuring adequate circulation of conditioned air across the rack rows. The maximum temperature observed within the data center is approximately 29°C, indicating that the proposed cooling arrangement can maintain the required thermal conditions under the operating scenarios considered. Based on the airflow and temperature distribution results, it is concluded that the proposed cooling design is adequate to meet the data centers cooling requirements.
Conclusions drawn from CFD analysis
The results of the CFD analysis indicate that the existing cooling system implemented in the data center is adequate to meet the cooling requirements under the operating conditions considered. The airflow distribution and temperature profiles demonstrate satisfactory cooling performance across the rack rows, with effective heat removal from the IT equipment. Furthermore, the provision of redundant CCU units provides an additional level of operational reliability, helping maintain cooling availability in the event of a unit being unavailable. Based on the analysis, it is concluded that the current cooling arrangement is adequate, with a sufficient level of redundancy to support reliable data center operation.
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