A new two-phase flow model based on coupling of the depth-integrated continuum method and discrete element method

doi:10.1016/j.cageo.2020.104640

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地灾害与地表过程重点实验室

	A new two-phase flow model based on coupling of the depth-integrated continuum method and discrete element method
	An, Huicong 3,4,5; Ouyang, Chaojun 1,3,4,5; Wang, Dongpo 2
刊名	COMPUTERS & GEOSCIENCES
	2021
卷号	146 页码:104640
关键词	Two-phase model Depth-integrated continuum Discrete element method Numerical modeling Fluid-solid coupling
ISSN号	0098-3004
DOI	10.1016/j.cageo.2020.104640
通讯作者	Ouyang, Chaojun(cjouyang@imde.ac.cn)
产权排序	1
文献子类	Article
英文摘要	The evolution of the volume fraction of solid phase, basal entrainment and interactions between the solid and fluid phase have significant impacts on rheological behavior, dynamic characteristics, and volume amplification in some earth-surface flows, including debris flows, hyper-concentration flows, dam-break flows. In this study, we propose a new two-phase flow dynamic model based on coupling of the depth-integrated continuum method and discrete element method (DEM). The fluid phase is computed by the depth-integrated continuum method, while the solid phase is modeled by the discrete element method. The data exchange between the two phases is efficiently handled by setting shared variables between the separate computational frameworks. The basal topography is simultaneously updated by numerically monitoring when solid particles are entrained into the fluid or deposited from the fluid. The current method provides a guiding solution for the common need to couple computations among multiple models. We examine several computational cases and compare the results with the theoretical solution and the experimental results. We conclude that the computational framework has unique advantages, placing it in a position to solve some ticklish issues in the field of fluid-solid interactions.
电子版国际标准刊号	1873-7803
资助项目	NSFC[41572303] ; NSFC[41520104002] ; CAS Key Research Program of Frontier Sciences[QYZDY-SSW-DQC006] ; GAS[2017HZ-03] ; CAS[2017HZ-03]
WOS关键词	DEBRIS FLOW ; NUMERICAL-SIMULATION ; DYNAMIC-ANALYSIS ; LANDSLIDE ; DEM ; TESTS ; MASS
WOS研究方向	Computer Science ; Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000599858100002
资助机构	NSFC ; CAS Key Research Program of Frontier Sciences ; GAS ; CAS
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/55714]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者	Ouyang, Chaojun
作者单位	1.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 2.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China 5.Chinese Acad Sci, Inst Mt Hazards & Environm IMHE, Chengdu 610041, Peoples R China
推荐引用方式 GB/T 7714	An, Huicong,Ouyang, Chaojun,Wang, Dongpo. A new two-phase flow model based on coupling of the depth-integrated continuum method and discrete element method[J]. COMPUTERS & GEOSCIENCES,2021,146:104640.
APA	An, Huicong,Ouyang, Chaojun,&Wang, Dongpo.(2021).A new two-phase flow model based on coupling of the depth-integrated continuum method and discrete element method.COMPUTERS & GEOSCIENCES,146,104640.
MLA	An, Huicong,et al."A new two-phase flow model based on coupling of the depth-integrated continuum method and discrete element method".COMPUTERS & GEOSCIENCES 146(2021):104640.