气候变化领域集成服务门户(CCPortal): Numerical analysis of cooling performance of a novel structure affected by aeolian sand clogging on expressway embankment in permafrost regions

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DOI	10.1016/j.ijheatmasstransfer.2022.122538
	Numerical analysis of cooling performance of a novel structure affected by aeolian sand clogging on expressway embankment in permafrost regions
	Ma, Qinguo; Luo, Xiaoxiao; Niu, Fujun; Sun, Weiyu; Lan, Tianli; Xia, Huxi
通讯作者	Luo, XX (通讯作者)，South China Univ Technol, State Key Lab Subtrop Bldg Sci, Guangzhou 510641, Guangdong, Peoples R China. ; Luo, XX (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China.
发表日期	2022
ISSN	0017-9310
EISSN	1879-2189
卷号	187
英文摘要	As an efficient and economical engineering measure, the inverted T-shaped crushed-rock interlayer is used to protect the permafrost under expressway. Its cooling performance is threatened by the climate warming, strong heat absorption of asphalt pavement and aeolian sand on the Qinghai-Tibet Plateau. However, the influence effect of the aeolian sand is unclear. In this study, a hydro-thermo coupled model, including ice-water phase change, heat and water transfer, and air convection heat transfer in the crushed rock, is established to simulate and evaluate the cooling performance of the inverted T-shaped crushed rock interlayer affected by aeolian sand clogging. A novel structure combining the L-shaped two-phase closed thermosyphons with the inverted T-shaped crushed-rock interlayer is proposed to satisfy the strict requirement of expressway. The numerical results show that the cooling effect of the inverted T-shaped crushed-rock interlayer on the underlying permafrost is influenced by aeolian sand to some extent, whose cooling effect is weak and concentrated at the embankment center. Permafrost beneath expressway was still degenerated, which is unfavorable for the long-term stability of expressway embankment. The novel structure can overcome the adverse effect of aeolian sand, produce a significant cooling performance on the permafrost under the embankment, and maintain the thermal stability of expressway embankment. Under the threat of aeolian sand, this novel structure is a candidate structure for the expressway embankment in permafrost regions. (c) 2022 Elsevier Ltd. All rights reserved.
关键词	2-PHASE CLOSED THERMOSIPHON CRUSHED-ROCK EMBANKMENT VENTILATED EMBANKMENT FIELD EXPERIMENT HEAT-TRANSFER MASS-TRANSFER FROZEN SOIL RAILWAY MODEL SIMULATION
英文关键词	Expressway embankment; Aeolian sand; Crushed-rock interlayer; Two-phase closed thermosyphon; Cooling effect; Permafrost region
语种	英语
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
WOS类目	Thermodynamics ; Engineering, Mechanical ; Mechanics
WOS记录号	WOS:000755663100011
来源期刊	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254182
作者单位	[Ma, Qinguo; Luo, Xiaoxiao; Niu, Fujun; Lan, Tianli; Xia, Huxi] South China Univ Technol, State Key Lab Subtrop Bldg Sci, Guangzhou 510641, Guangdong, Peoples R China; [Ma, Qinguo; Luo, Xiaoxiao; Niu, Fujun] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Sun, Weiyu] Lanzhou Jiaotong Univ, Sch Civil Engn, Lanzhou 730070, Peoples R China
推荐引用方式 GB/T 7714	Ma, Qinguo,Luo, Xiaoxiao,Niu, Fujun,et al. Numerical analysis of cooling performance of a novel structure affected by aeolian sand clogging on expressway embankment in permafrost regions[J]. 中国科学院西北生态环境资源研究院,2022,187.
APA	Ma, Qinguo,Luo, Xiaoxiao,Niu, Fujun,Sun, Weiyu,Lan, Tianli,&Xia, Huxi.(2022).Numerical analysis of cooling performance of a novel structure affected by aeolian sand clogging on expressway embankment in permafrost regions.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,187.
MLA	Ma, Qinguo,et al."Numerical analysis of cooling performance of a novel structure affected by aeolian sand clogging on expressway embankment in permafrost regions".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 187(2022).