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Calibrated CFD simulation to evaluate thermal comfort in a highly-glazed naturally ventilated room

机译:校准的CFD模拟可评估玻璃高度自然通风的房间的热舒适性

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摘要

Natural ventilation is a sustainable solution to maintaining healthy and comfortable environmental conditions in buildings. However, the effective design, construction and operation of naturally ventilated buildings require a good understanding of complex airflow patterns caused by the buoyancy and wind effects. The work presented in this article employed a 3D computational fluid dynamics (CFD) analysis in order to investigate environmental conditions and thermal comfort of the occupants of a highly-glazed naturally ventilated meeting room. This analysis was facilitated by the real-time field measurements performed in an operating building, and previously developed formal calibration methodology for reliable CFD models of indoor environments. Since, creating an accurate CFD model of an occupied space in a real-life scenario requires a high level of CFD expertise, trusted experimental data and an ability to interpret model input parameters; the calibration methodology guided towards a robust and reliable CFD model of the indoor environment. This calibrated CFD model was then used to investigate indoor environmental conditions and to evaluate thermal comfort indices for the occupants of the room. Thermal comfort expresses occupants' satisfaction with thermal environment in buildings by defining the range of indoor thermal environmental conditions acceptable to a majority of occupants. In this study, the thermal comfort analysis, supported by both field measurements and CFD simulation results, confirmed a satisfactory and optimal room operation in terms of thermal environment for the investigated real-life scenario.
机译:自然通风是维持建筑物健康舒适的环境条件的可持续解决方案。然而,自然通风建筑的有效设计,建造和运行需要对浮力和风效应引起的复杂气流模式有充分的了解。本文中介绍的工作采用了3D计算流体动力学(CFD)分析,以研究环境条件和高度釉面的自然通风会议室的乘员的热舒适性。在运行中的建筑物中进行实时现场测量以及以前开发的用于室内环境的可靠CFD模型的正式校准方法,都有助于进行此分析。由于要在实际场景中创建精确的占位空间CFD模型,需要高水平的CFD专业知识,可信赖的实验数据和解释模型输入参数的能力;校准方法指导了室内环境的稳健可靠的CFD模型。然后,该校准的CFD模型用于研究室内环境条件并评估房间占用者的热舒适指数。热舒适性通过定义大多数居住者可以接受的室内热环境条件范围来表达居住者对建筑物热环境的满意度。在这项研究中,在现场测量和CFD模拟结果的支持下进行的热舒适性分析证实,对于所研究的真实场景,在热环境方面,房间操作令人满意且最佳。

著录项

  • 来源
    《Building and Environment》 |2013年第12期|73-89|共17页
  • 作者单位

    Informatics Research Unit for Sustainable Engineering (IRUSE), Calway, Ireland,Department of Civil Engineering, National University of Ireland Calway, Calway, Ireland,Ryan Institute, National University of Ireland Galway, Calway, Ireland;

    Informatics Research Unit for Sustainable Engineering (IRUSE), Calway, Ireland,Department of Civil Engineering, National University of Ireland Calway, Calway, Ireland,Ryan Institute, National University of Ireland Galway, Calway, Ireland;

    Informatics Research Unit for Sustainable Engineering (IRUSE), Calway, Ireland,Department of Civil Engineering, National University of Ireland Calway, Calway, Ireland,Ryan Institute, National University of Ireland Galway, Calway, Ireland;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    CFD; Measurement; Indoor environment; Natural ventilation; Calibration; Thermal comfort;

    机译:差价合约测量;室内环境;自然通风;校准;热舒适;

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