Study on the hydrothermal coupling characteristics of polyurethane insulation boards slope protection structure incorporating phase change effect

Abstract The canals are essential for agricultural irrigation, shipping and industry as important hydraulic infrastructure. In the seasonal freeze regions, the water conveyance canals are damaged due to the effects of freeze–thaw cycles. The freeze depth of soil in the water transfer canal varies co...

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Autores principales:	Hailiang Liu, Donghe Ma, Changming Wang, Xiaoyang Liu, Di Wu, Bailong Li, Kaleem Ullah Jan Khan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/96c641099c3341dda6bbce3ac22fec67
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spelling	oai:doaj.org-article:96c641099c3341dda6bbce3ac22fec672021-12-02T18:02:06ZStudy on the hydrothermal coupling characteristics of polyurethane insulation boards slope protection structure incorporating phase change effect10.1038/s41598-021-97561-42045-2322https://doaj.org/article/96c641099c3341dda6bbce3ac22fec672021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-97561-4https://doaj.org/toc/2045-2322Abstract The canals are essential for agricultural irrigation, shipping and industry as important hydraulic infrastructure. In the seasonal freeze regions, the water conveyance canals are damaged due to the effects of freeze–thaw cycles. The freeze depth of soil in the water transfer canal varies considerably due to changes in temperature and water content. This paper compared the relationship of freeze depth, temperature and water content by field tests and numerical calculation methods by incorporating phase change. The results from present study showed that the decrease in temperature causes the water in the soil to freeze, the ice front migrated downwards, and the water in soil below ice front gradually migrated towards the ice front resulting in a large difference in water content of the soil before and after freezing. The Polyurethane insulation board + Concrete board slope structure (PC) as an insulation slope structure was proposed in this paper to mitigate the effect of freezing and thawing on the water conveyance canals. The freeze depth decreased significantly under the protective effect. In addition, this paper compared the anti-frost effect of different thicknesses of polyurethane insulation boards, and the results provided a reference for the anti-frost design of water conveyance canals.Hailiang LiuDonghe MaChangming WangXiaoyang LiuDi WuBailong LiKaleem Ullah Jan KhanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hailiang Liu Donghe Ma Changming Wang Xiaoyang Liu Di Wu Bailong Li Kaleem Ullah Jan Khan Study on the hydrothermal coupling characteristics of polyurethane insulation boards slope protection structure incorporating phase change effect
description	Abstract The canals are essential for agricultural irrigation, shipping and industry as important hydraulic infrastructure. In the seasonal freeze regions, the water conveyance canals are damaged due to the effects of freeze–thaw cycles. The freeze depth of soil in the water transfer canal varies considerably due to changes in temperature and water content. This paper compared the relationship of freeze depth, temperature and water content by field tests and numerical calculation methods by incorporating phase change. The results from present study showed that the decrease in temperature causes the water in the soil to freeze, the ice front migrated downwards, and the water in soil below ice front gradually migrated towards the ice front resulting in a large difference in water content of the soil before and after freezing. The Polyurethane insulation board + Concrete board slope structure (PC) as an insulation slope structure was proposed in this paper to mitigate the effect of freezing and thawing on the water conveyance canals. The freeze depth decreased significantly under the protective effect. In addition, this paper compared the anti-frost effect of different thicknesses of polyurethane insulation boards, and the results provided a reference for the anti-frost design of water conveyance canals.
format	article
author	Hailiang Liu Donghe Ma Changming Wang Xiaoyang Liu Di Wu Bailong Li Kaleem Ullah Jan Khan
author_facet	Hailiang Liu Donghe Ma Changming Wang Xiaoyang Liu Di Wu Bailong Li Kaleem Ullah Jan Khan
author_sort	Hailiang Liu
title	Study on the hydrothermal coupling characteristics of polyurethane insulation boards slope protection structure incorporating phase change effect
title_short	Study on the hydrothermal coupling characteristics of polyurethane insulation boards slope protection structure incorporating phase change effect
title_full	Study on the hydrothermal coupling characteristics of polyurethane insulation boards slope protection structure incorporating phase change effect
title_fullStr	Study on the hydrothermal coupling characteristics of polyurethane insulation boards slope protection structure incorporating phase change effect
title_full_unstemmed	Study on the hydrothermal coupling characteristics of polyurethane insulation boards slope protection structure incorporating phase change effect
title_sort	study on the hydrothermal coupling characteristics of polyurethane insulation boards slope protection structure incorporating phase change effect
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/96c641099c3341dda6bbce3ac22fec67
work_keys_str_mv	AT hailiangliu studyonthehydrothermalcouplingcharacteristicsofpolyurethaneinsulationboardsslopeprotectionstructureincorporatingphasechangeeffect AT donghema studyonthehydrothermalcouplingcharacteristicsofpolyurethaneinsulationboardsslopeprotectionstructureincorporatingphasechangeeffect AT changmingwang studyonthehydrothermalcouplingcharacteristicsofpolyurethaneinsulationboardsslopeprotectionstructureincorporatingphasechangeeffect AT xiaoyangliu studyonthehydrothermalcouplingcharacteristicsofpolyurethaneinsulationboardsslopeprotectionstructureincorporatingphasechangeeffect AT diwu studyonthehydrothermalcouplingcharacteristicsofpolyurethaneinsulationboardsslopeprotectionstructureincorporatingphasechangeeffect AT bailongli studyonthehydrothermalcouplingcharacteristicsofpolyurethaneinsulationboardsslopeprotectionstructureincorporatingphasechangeeffect AT kaleemullahjankhan studyonthehydrothermalcouplingcharacteristicsofpolyurethaneinsulationboardsslopeprotectionstructureincorporatingphasechangeeffect
_version_	1718378942872682496

Study on the hydrothermal coupling characteristics of polyurethane insulation boards slope protection structure incorporating phase change effect

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