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Reduced-scale study of wind influence on mean airflows inside buildings equipped with ventilation systems

机译：减少风对装有通风系统的建筑物内平均气流的影响的研究

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摘要

To study mass transfers inside buildings equipped with ventilation systems, a methodology has been developed to carry out reduced-scale experiments for studying isothermal flows in a steady or a transient state. This methodology has been numerically and experimentally validated on simple configurations and applied to two reference configurations representative of nuclear facilities. The wind influence on mass transfers inside these configurations, in nominal, damaged (ventilation stopped) or accidental (internal overpressure) situations, has been studied by carrying out wind tunnel experiments. The objectives of this article are to present the scaling-down methodology and the main experimental results concerning the influence of wind on steady-state airflows inside the reduced-scale models. It is notably shown that wind effects can lead to a partial or a total loss of the pollutant containment inside buildings. The reliability of the zonal code SYLVIA, which is used to support safety assessments in nuclear facilities, has then been analysed from these experimental results.
机译：为了研究装有通风系统的建筑物内部的传质，已开发出一种方法来进行缩小规模的实验，以研究稳态或瞬态的等温流。该方法已经在简单配置上进行了数值和实验验证，并应用于代表核设施的两个参考配置。通过进行风洞实验研究了在标称，损坏（通风停止）或偶然（内部超压）情况下，风对这些配置内部传质的影响。本文的目的是介绍按比例缩小的方法以及有关风对缩小比例模型内部稳态气流的影响的主要实验结果。值得注意的是，风的影响会导致建筑物内部污染物封闭的部分或全部损失。然后从这些实验结果中分析了用于支持核设施安全评估的区域代码SYLVIA的可靠性。

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  • 来源
    《Building and Environment》 |2012年第12期|p.231-244|共14页
  • 作者

    Nicolas Le Roux; Xavier Faure; Christian Inard; Sandrine Soares; Laurent Ricciardi;

  • 作者单位

    Centre Scientiflque et Technique du Batiment (CSTB), Nantes, France, Laboratoire d'Etude des Phenomenes de Transfert et de I'lnstantaneite: Agro-industrie et Batiment (LEPTIAB), La Rochelle, France, lnstitut de Radioprotection et de Surete Nucleaire (IRSN), Saclay, France;

    Centre Scientiflque et Technique du Batiment (CSTB), Nantes, France;

    Laboratoire d'Etude des Phenomenes de Transfert et de I'lnstantaneite: Agro-industrie et Batiment (LEPTIAB), La Rochelle, France;

    lnstitut de Radioprotection et de Surete Nucleaire (IRSN), Saclay, France;

    lnstitut de Radioprotection et de Surete Nucleaire (IRSN), Saclay, France;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    ventilation systems; similarity; steady state; isothermal flows; reduced-scale experiments; zonal code SYLVIA;

    机译：通风系统;相似;稳定状态;等温流动缩小规模的实验;区域代码SYLVIA;

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