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Flow models of fluidized granular masses with different basal resistance terms
Wu, Hengbin1,2; Jiang, Yuanjun3; Zhang, Xuefu2
Corresponding AuthorWu, Hengbin
2015-06-01
Source PublicationGEOMECHANICS AND ENGINEERING
ISSN2005-307X
Volume8Issue:6Pages:811-828
SubtypeArticle
AbstractProper modelling of the basal resistance terms is key in simulating the motion of fluidized granular flow. In this paper, standard depth-averaged governing equations of granular flow are used together with the classical Coulomb, Voellmy, and velocity dependent friction models (VDFM). A high-resolution modified TVDLF method is implemented to solve the partial differential equations without numerical oscillations. The effects of basal resistance terms on the motion of granular flows such as geometric shape evolution, travel times and final deposits are analyzed. Based on the numerical results, the predictions of the front and rear end positions and developing length of granular flow with Coulomb friction model show excellent agreements with experiment results reported by Hutter et al. (1995), and illustrate the validity of the numerical approach. For the Voellmy model, the higher value of turbulent coefficient than reality may obtain more reasonable predicted runout for the small-scale avalanche or granular flow. The energy exchange laws indicate that VDFM is different from the Coulomb and Voellmy models, although the flow characteristics of both three models fit the measurements and observations very well.
KeywordGranular Flow Avalanche Dynamics Basal Resistance Terms Deposition Process
WOS HeadingsScience & Technology ; Technology
DOI10.12989/gae.2015.8.6.811
WOS Subject ExtendedEngineering
Indexed BySCI
WOS KeywordROUGH INCLINED PLANES ; DEBRIS FLOWS ; AVALANCHES ; DYNAMICS ; RUNOUT ; SIMULATIONS ; LANDSLIDES ; TOPOGRAPHY ; INITIATION ; VELOCITY
Language英语
WOS SubjectEngineering, Civil ; Engineering, Geological
WOS IDWOS:000364101900005
Funding OrganizationNational Natural Science Foundation of China(51309262 ; Scientific Research Foundation for the Introduction of Talent and Key Project of Chongqing Three Gorges University(14ZD17) ; State Key Laboratory Breeding Base of Mountain Bridge and Tunnel Engineering(CQSLBF-Y15-3) ; Programs for Science and Technology Development of Wanzhou district, Chongqing city(201203035) ; Chinese National Committee for Integrated Research on Disaster Risk(IRDR2012-Y01) ; 41472293 ; 41472325)
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/13835
Collection山地灾害与地表过程重点实验室
Affiliation1.Chongqing Three Gorges Univ, Coll Civil Engn, Chongqing, Peoples R China
2.Chongqing Jiaotong Univ, State Key Lab Breeding Base Mt Bridge & Tunnel En, Chongqing, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu, Peoples R China
Recommended Citation
GB/T 7714
Wu, Hengbin,Jiang, Yuanjun,Zhang, Xuefu. Flow models of fluidized granular masses with different basal resistance terms[J]. GEOMECHANICS AND ENGINEERING,2015,8(6):811-828.
APA Wu, Hengbin,Jiang, Yuanjun,&Zhang, Xuefu.(2015).Flow models of fluidized granular masses with different basal resistance terms.GEOMECHANICS AND ENGINEERING,8(6),811-828.
MLA Wu, Hengbin,et al."Flow models of fluidized granular masses with different basal resistance terms".GEOMECHANICS AND ENGINEERING 8.6(2015):811-828.
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