通信机房热环境的模拟及测量方式的改进

发布时间：2018-02-01 02:01

本文关键词： 数值模拟气流组织测量点位置优化正交函数逼近聚类分析　出处：《中国海洋大学》2014年硕士论文　论文类型：学位论文

【摘要】：通信机房是网络服务中至关重要的一部分，所谓数据中心机房通常是指在某一物理空间内对信息的处理、存储、传输、交换、管理等进行集中的处理和有机组合。电信设备的稳定运行对机房环境有着较高的要求。同时，数据中心行业的发展越来越快，一台3P空调每天的耗电量就达到了36.1度，大力开展节电节能工作刻不容缓，这对缓解我国能源紧张，建设低碳经济等问题，都具有非常重要的意义。在通信机房室内热环境的模拟过程中，涉及到极其复杂的物理过程，要根据实际需求找到合适的模型与之匹配。本文通过对通信机房的实地测试，，在了解了计算流体力学的理论知识以及应用范围的基础上，对其数值计算方法进行了研究，并将各个方法进行了对比，找到适合本文模型的方法。结合运用k-ε模型及SIMPLEC算法，选择合适的边界条件、各项参数并借助于FLUENT简化模拟出机房的温度场和速度场等数据，得出因为实际中风管的沿程阻力、局部阻力等问题，各风口的出风量不均最高能达到9.67m/s，最低是3.27m/s。机房速度场分布并不均匀，而一般的送风口测试点分布都是规律性分布，对不同的模型使用相同的测试方法会产生较大误差，使得模拟结果与客户提供数据不能很好的对应。通过对流场的分析为后面的测量点位置改进做出铺垫。本文的研究采用正交函数逼近法，这种算法在很大程度上能够保证分布参数模型的空间分布特性，而且计算量小，算法简单。在基于CFD技术的分布参数方法基础上将偏微分方程转化为代数方程组，从随后的过程中求得未知参数，获得较高精度的辨识结果。将从模拟结果得出的数据进行分析，借助于正交函数逼近法的计算和聚类分析中的模糊识别通过MATLAB来得出测量点的最优测试结果。实现了测量点位置的改进。在网络服务快速发展的今天，机房各方面都有待优化，数据中心的成功运作需要长期提供一个高效的散热环境，并且期望以最低的运营费用来达到最高的可用性和可靠性。本文仅提出一种测量点位置改进的方案来为以后的通信机房测试点位置提供一种初步思路。该思路对于今后的通信机房改造也具有一定的意义。
[Abstract]:The communication room is a vital part of the network service. The so-called data center computer room usually refers to the processing, storage, transmission and exchange of information in a certain physical space. Management and other centralized processing and organic combination. The stable operation of telecommunications equipment has higher requirements for the computer room environment. At the same time, the data center industry is developing more and more quickly. The energy consumption of a 3P air conditioner is 36.1 degrees per day. It is of great significance to develop the energy saving and energy saving work, which is of great significance to alleviate the energy shortage and build a low-carbon economy in our country. In the process of simulating the indoor thermal environment of the communication computer room, the extremely complex physical process is involved, and a suitable model should be found to match it according to the actual demand. This paper passes the field test of the communication computer room. On the basis of understanding the theoretical knowledge of computational fluid dynamics and its application scope, the numerical calculation methods are studied and compared. Find the method suitable for this model and choose the appropriate boundary condition by using k- 蔚 model and SIMPLEC algorithm. With the help of FLUENT, the data of temperature field and velocity field of the engine room are simulated, and the problems such as the resistance along the path and the local resistance of the air pipe in practice are obtained. The distribution of velocity field in the engine room is not uniform, but the distribution of the test points of the general air supply outlet is regular. 3. The distribution of the uneven air output of the tuyere is 9.67 m / s, and the lowest is 3.27 m / s. The distribution of velocity field in the engine room is not uniform. Using the same test method for different models will result in large errors. The simulation results and customer data can not be very good correspondence. Through the analysis of the flow field to improve the position of the measurement points. This paper uses orthogonal function approximation method. To a large extent, this algorithm can guarantee the spatial distribution characteristics of the distributed parameter model, and the computational complexity is small. The algorithm is simple. On the basis of the distributed parameter method based on CFD technique, the partial differential equations are transformed into algebraic equations, and the unknown parameters are obtained from the subsequent process. High precision identification results are obtained. The data obtained from the simulation results are analyzed. By means of the calculation of orthogonal function approximation method and fuzzy recognition in clustering analysis, the optimal test results of measuring points are obtained by MATLAB, and the improvement of measuring points' position is realized. With the rapid development of network service, all aspects of computer room need to be optimized. The successful operation of data center needs to provide an efficient heat dissipation environment for a long time. It is expected that the highest availability and reliability can be achieved with the lowest operating cost. In this paper, we only propose a scheme to improve the location of the measuring points to provide a preliminary idea for the location of the test points in the future communication rooms. In the future, the transformation of the communication room also has certain significance.
【学位授予单位】：中国海洋大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN80

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