中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Flow models of fluidized granular masses with different basal resistance terms

文献类型:期刊论文

作者Wu, Hengbin1,2; Jiang, Yuanjun3; Zhang, Xuefu2
刊名GEOMECHANICS AND ENGINEERING
出版日期2015-06-01
卷号8期号:6页码:811-828
关键词granular flow avalanche dynamics basal resistance terms deposition process
ISSN号2005-307X
通讯作者Wu, Hengbin
英文摘要

Proper 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.

WOS标题词Science & Technology ; Technology
类目[WOS]Engineering, Civil ; Engineering, Geological
研究领域[WOS]Engineering
关键词[WOS]ROUGH INCLINED PLANES ; DEBRIS FLOWS ; AVALANCHES ; DYNAMICS ; RUNOUT ; SIMULATIONS ; LANDSLIDES ; TOPOGRAPHY ; INITIATION ; VELOCITY
收录类别SCI
语种英语
WOS记录号WOS:000364101900005
源URL[http://ir.imde.ac.cn/handle/131551/13835]  
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
作者单位1.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
推荐引用方式
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.

入库方式: OAI收割

来源:成都山地灾害与环境研究所

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