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Investigations of leakage mechanisms and its influences on a micro swing engine considering rarefaction effects

文献类型：期刊论文

作者Zhou, Xiong1,2; Zhang, Zhenyu3; Kong, Wenjun1; Du, Ning1,2
刊名Applied thermal engineering
出版日期2016-08-05
卷号106页码:674-680
关键词Micro swing engine Clearance leakage Rarefaction effects
ISSN号1359-4311
DOI10.1016/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
WOS记录号WOS:000381530600069
出版者PERGAMON-ELSEVIER SCIENCE LTD
URI标识http://www.irgrid.ac.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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来源：中国科学院大学

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