Reduced-scale study of wind influence on mean airflows inside buildings equipped with ventilation systems
Reduced-scale study of wind influence on mean airflows inside buildings equipped with ventilation systems
复制标题
DOI：
10.1016/j.buildenv.2012.07.007
复制
发表时间：
2012-12
影响因子：
7.4
通讯作者：
N. Roux;X. Faure;C. Inard;S. Soares;L. Ricciardi
中科院分区：
文献类型：
--
作者：
N. Roux;X. Faure;C. Inard;S. Soares;L. Ricciardi
为了研究配备通风系统的建筑物内的传质，我们开发了一种方法，用于研究稳态或瞬态等温流动的小尺度实验。该方法已在简单构型上进行了数值和实验验证，并应用于两个具有代表性的核设施参考构型。通过风洞实验，研究了风洞在名义、损坏（通风停止）或意外（内部超压）情况下，风对这些结构内部传质的影响。本文的目的是介绍缩小模型内风对稳态气流影响的缩小方法和主要实验结果。值得注意的是，风的影响可以导致建筑物内污染物的部分或全部损失。然后根据这些实验结果分析了用于支持核设施安全评估的区域代码SYLVIA的可靠性。
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.