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An evaluation of turbulence and tile models at server rack level for data centers

机译：对数据中心服务器机架级别的湍流和瓷砖模型的评估

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摘要

In recent decades, computational tool is popularly used for thermal management of large data centers to meet the high demand of IT services which causes an increase in thermal load density. In this study, an evaluation of various available tile models at different tile-to-rack airflow rate ratios is carefully conducted using experimental data for one single server rack in a dada center laboratory from the available literature. In addition, several turbulence models are thoroughly studied, and recommendations are provided for the most accurate and less time-consuming turbulence models depending on targeting purposes when applying to a single rack model. A proposed composite performance index is introduced and used for evaluating various tile and turbulence models. It is an interesting finding that the zero-equation produces a very decent result when compared to the widely used standard k-epsilon. As for the tile model investigated, it is found that the body force and modified body force model are the best candidates for tile modelling applications. The use of zero equation with either body force or modified body force tile model yields either an equivalent or better results in terms of time and accuracy compared to the standard k-epsilon case combined with the same tile models.
机译：近几十年来，计算工具普遍用于大型数据中心的热管理，以满足IT服务的高需求，这导致热负荷密度增加。在该研究中，使用来自可用文献的DADA中心实验室的一个单一服务器机架的实验数据仔细地进行各种可用瓷砖模型的各种可用瓷砖模型的评估。此外，彻底研究了几种湍流模型，并且根据施加到单个机架模型时，为最准确和更少耗时的湍流模型提供推荐。介绍了拟议的复合性能指标，并用于评估各种瓦片和湍流模型。与广泛使用的标准K-epsilon相比，零方程产生了非常不错的结果是一个有趣的发现。对于瓷砖模型进行了调查，发现身体力量和改进的体力模型是瓷砖建模应用的最佳候选者。与具有相同瓷砖模型的标准K-EPSILON壳相比，使用具有身体力或修改的体力瓦片模型的零方程的使用产生的等效或更好的结果。

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