Revisiting Internal Pressure Dynamics in a Single Opening Enclosure Ventilated by Wind

CSpace > 应用数学研究所

	Revisiting Internal Pressure Dynamics in a Single Opening Enclosure Ventilated by Wind
	Xu, Pengcheng1,2 ; Li, Yuguo 1
	2011-06-01
发表期刊	INTERNATIONAL JOURNAL OF VENTILATION
ISSN	1473-3315
卷号	10 期号:1 页码:1-18
摘要	This paper describes a re-analysis of internal pressure and building ventilation in a single-opening enclosure ventilated by winds. The dynamics of internal pressure is governed by a nonlinear oscillation equation. An alternative semi-nonlinear approach is proposed for obtaining the amplitude and phase shift of the periodic motion, the resonant frequency and resonant amplitude. Our new approach reproduced two of the commonly used existing linearization results. We also obtained explicit formulas for both the amplitude and phase shift of the internal pressure, as well as the airflow velocity through the opening. Numerical "accurate" solutions of the original governing equation were also obtained to evaluate our theoretical ones. We also found a quasi-periodic motion exists in addition to the periodic motion already found in the literature, but this has not been proved in any physical experiments.
关键词	internal pressure natural ventilation single opening periodic motion wind resonance semi-nonlinear analysis
语种	英语
资助项目	Research Grants Council of the Hong Kong Special Administrative Region, China[HKU 714608E] ; National Natural Science Foundation of China[10971214]
WOS研究方向	Construction & Building Technology ; Energy & Fuels
WOS类目	Construction & Building Technology ; Energy & Fuels
WOS记录号	WOS:000290880700001
出版者	VEETECH LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/11237
专题	应用数学研究所
通讯作者	Xu, Pengcheng
作者单位	1.Univ Hong Kong, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China 2.Chinese Acad Sci, Acad Math & Syst Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Xu, Pengcheng,Li, Yuguo. Revisiting Internal Pressure Dynamics in a Single Opening Enclosure Ventilated by Wind[J]. INTERNATIONAL JOURNAL OF VENTILATION,2011,10(1):1-18.
APA	Xu, Pengcheng,&Li, Yuguo.(2011).Revisiting Internal Pressure Dynamics in a Single Opening Enclosure Ventilated by Wind.INTERNATIONAL JOURNAL OF VENTILATION,10(1),1-18.
MLA	Xu, Pengcheng,et al."Revisiting Internal Pressure Dynamics in a Single Opening Enclosure Ventilated by Wind".INTERNATIONAL JOURNAL OF VENTILATION 10.1(2011):1-18.