포러스 (Porous) 경계조건을 이용한 데이터센터의기류 및 온도분포 해석 방법에 대한 연구

Abstract

With the development of IT industries in recent years, the needs for data centers has been increased together. Data centersin which so many server computers are arranged usually need a large cooling energy, and its energy conservation has been issued. The amount of cooling energy needed is concerned with the distribution of air flow and that of temperature in computer rooms. There are many studies on those conducted by CFD (computational fluid dynamics) simulation, and those have been conductedonly in the space for computer rooms but without plenums for the supply and return. In those studies, the boundary conditionsof airflow used to be given uniformly throughout the whole region of velocity outlet in the cold aisle. However, there may bea different distribution of air velocity at the velocity outlets constructed with perforated tiles, and the pressure drop through itneeds to be applied to the simulation by utilizing porous boundary condition. In this study, the distributions of airflow and temperatureformed in the space without plenums were compared with those formed in the space with plenums by CFD simulation. Indicesof SHI, RHI, and RTI in each case were investigated. As a results, there were quite large differences between them, and conductingCFD simulations to the space including plenums was recommended as a simulation method.