气候变化领域集成服务门户(CCPortal): Numerical analysis for thermal characteristics of cinderblock interlayer embankments in permafrost regions

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DOI	10.1016/j.applthermaleng.2011.10.020
	Numerical analysis for thermal characteristics of cinderblock interlayer embankments in permafrost regions
	Zhang, Mingyi; Lai, Yuanming; Li, Dongqing; Tong, Gangqiang; Li, Jingbo
发表日期	2012
ISSN	1359-4311
起始页码	252
结束页码	259
卷号	36
英文摘要	This study numerically estimates the thermal characteristics of cinderblock interlayer embankments in permafrost regions. The characteristics of wind flow within the cinderblock interlayer are tested by wind tunnel experiment. The tested results, as well as the heat and mass transfer theories, are used to develop a conceptual and numerical model of cinderblock interlayer embankments without and with ventilated ducts. The model is conducted to evaluate the cooling capacity of the cinderblock interlayer embankments of expressway without and with ventilated ducts. The numerical results indicate that the cooling capacity of cinderblock interlayer embankment without ventilated ducts enhances with the increase of cinderblock interlayer thickness. The permafrost under the embankment, however, is still warmer than that under the natural ground surface. This warming can be offset when ventilated ducts are added to the top of the cinderblock interlayer. Therefore, the cinderblock interlayer embankment with ventilated ducts can be an effective measure to ensure the stability of expressway in warm permafrost regions. (C) 2011 Elsevier Ltd. All rights reserved.
英文关键词	Thermal characteristic; Cinderblock interlayer embankment; Ventilated duct; Convection; Expressway; Permafrost region
语种	英语
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
WOS类目	Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics
WOS关键词	RAILWAY EMBANKMENT ; SIMULATION ; CONVECTION
WOS记录号	WOS:000301093200028
来源期刊	APPLIED THERMAL ENGINEERING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239514
作者单位	[Zhang, Mingyi; Lai, Yuanming; Li, Dongqing; Tong, Gangqiang; Li, Jingbo] Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Mingyi,Lai, Yuanming,Li, Dongqing,et al. Numerical analysis for thermal characteristics of cinderblock interlayer embankments in permafrost regions[J],2012,36.
APA	Zhang, Mingyi,Lai, Yuanming,Li, Dongqing,Tong, Gangqiang,&Li, Jingbo.(2012).Numerical analysis for thermal characteristics of cinderblock interlayer embankments in permafrost regions.APPLIED THERMAL ENGINEERING,36.
MLA	Zhang, Mingyi,et al."Numerical analysis for thermal characteristics of cinderblock interlayer embankments in permafrost regions".APPLIED THERMAL ENGINEERING 36(2012).