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首页> 外文期刊>International Journal of Ventilation >Natural, Wind-Forced Ventilation caused by Turbulence in a Room with a Single Opening
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Natural, Wind-Forced Ventilation caused by Turbulence in a Room with a Single Opening

机译：由一个开口的房间中的湍流引起的自然风强迫通风

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摘要

Even if there is only one opening within a room and there is no temperature difference between the inside and outside, the room will be ventilated by the external natural wind. Two kinds of theoretical approach have been tried before to evaluate the mechanisms driving this flow: one is pulsation theory and the other is mixing layer theory. In this paper, these theories are reviewed and the validity of each is examined by means of a wind tunnel test. Results showed that the pulsation theory was not applicable to all wind directions. An experimental equation was derived from wind tunnel tests on a small building model incorporating a single circular opening. In addition, other approaches using CFD and PIV to determine the airflow inside the single opening precisely were tried and the dominant frequency of the velocity fluctuation was examined.
机译：即使一个房间内只有一个开口，并且内部和外部之间没有温度差，房间也将因外部自然风而通风。以前曾尝试过两种理论方法来评估驱动这种流动的机理：一种是脉动理论，另一种是混合层理论。本文对这些理论进行了回顾，并通过风洞试验检验了每种理论的有效性。结果表明，脉动理论不适用于所有风向。从包含单个圆形开口的小型建筑模型的风洞测试中得出了一个实验方程。此外，尝试了使用CFD和PIV精确确定单个开口内部气流的其他方法，并检查了速度波动的主要频率。

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