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	Investigations of leakage mechanisms and its influences on a micro swing engine considering rarefaction effects
	Zhou, Xiong1,2; Zhang, Zhenyu3; Kong, Wenjun1; Du, Ning1,2
刊名	Applied thermal engineering
	2016-08-05
卷号	106页码:674-680
关键词	Micro swing engine Clearance leakage Rarefaction effects
ISSN号	1359-4311
DOI	10.1016/j.applthermaleng.2016.06.067
通讯作者	Kong, wenjun(wjkong@iet.cn)
英文摘要	Considering rarefaction effects, this paper investigated mechanisms of the clearance leakage and its influences on a micro swing engine for the micro power generation by employing three different flow models named as discrete velocity direction (dvd1) model, navier-stokes equations with slip boundary conditions (ns-slip(2)) and no-slip boundary conditions (ns-no slip(3)). using the dvd model, this paper firstly studied leakage mechanisms of a micro couette-poisueille flow. factors which control the leakage in different regimes were obtained. furthermore, the system-level predictions of the clearance leakage in the micro swing engine have been conducted by solving the navier-stokes equations. the leakage flow regime, patterns and characteristics were presented. results by ns-slip and ns-no slip were compared to study the rarefaction effects. finally, investigations of the engine size and the gap height on the engine performance have been conducted. the significance of the leakage in different engine size regimes was presented, and the results show that rarefaction effects affect the indicated thermal efficiency greatly with the decrease of the engine size scale. (c) 2016 elsevier ltd. all rights reserved.
WOS关键词	HCCI COMBUSTION ; GENERATION ; MODEL
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
WOS类目	Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000381530600069
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2376300
专题	中国科学院大学
通讯作者	Kong, Wenjun
作者单位	1.Chinese Acad Sci, Inst Engn Thermophys, Key Lab Light Duty Gas Turbine, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Engn Thermophys, Natl Energy Wind Turbine Blades R&D Ctr, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Xiong,Zhang, Zhenyu,Kong, Wenjun,et al. Investigations of leakage mechanisms and its influences on a micro swing engine considering rarefaction effects[J]. Applied thermal engineering,2016,106:674-680.
APA	Zhou, Xiong,Zhang, Zhenyu,Kong, Wenjun,&Du, Ning.(2016).Investigations of leakage mechanisms and its influences on a micro swing engine considering rarefaction effects.Applied thermal engineering,106,674-680.
MLA	Zhou, Xiong,et al."Investigations of leakage mechanisms and its influences on a micro swing engine considering rarefaction effects".Applied thermal engineering 106(2016):674-680.

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