The thesis investigates an implementation of Computational Fluid Dynamics approach in order to provide optimum cooling solutions for the IT equipment of a large operational Data Center in Greece. The work takes a systematic approach in order to model the Data Center's geometry, airflow, thermodynamics, and heat transfer characteristics. The thesis's method is to start a simplified model of a single Rack, with a small number of air flow tiles of cold air and one duct in order to get the data

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... ed for the larger central area of the Data Center. The basic approach for the flow inside the rack is made through the concept that the rack is a porous media. Then the central area of the Data Center is modelled and a number of critical parameters for optimum cooling (temperature of the inlets' cold air, velocity of the inlets' cold air, rack's thermal distribution) is investigated. The modelling solution was made using the ANSYS Fluent proprietary source code. Main target of the analysis is the computational model to be as close to the real conditions of the Data Center as possible, using the actual data of the geometry, power and cooling metrics and monitoring. The data of the fluid flow (velocities of inlet and outlet air and temperatures of inlet and outlet air) are collected with on-site measurements. The geometry of the model is produced making the as-build design plans 3-dimensional and the thermal loads are collected from the actual distribution electrical data.