Research on the Entrainment of Path Material by the Granular Flow

The experiment and numerical simulation were used to study the entrainment of path material by the granular flow. The effects of several factors on the entrainment were observed through the experiment. Research results show that when the granular flow passes on the loose material, the entrainment an...

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Bibliographic Details
Published inKSCE journal of civil engineering Vol. 23; no. 12; pp. 5051 - 5063
Main Authors Fan, Yunyun, Wu, Fengyuan, Li, Ming, Liang, Li
Format Journal Article
LanguageEnglish
Published Seoul Korean Society of Civil Engineers 01.12.2019
Springer Nature B.V
대한토목학회
Subjects
Civil Engineering
College professors
Deposition
Dimensional analysis
Education
Engineering
Entrainment
Experiments
Flow
Geology
Geotechnical Engineering
Geotechnical Engineering & Applied Earth Sciences
Granular materials
Industrial Pollution Prevention
Mass
Mathematical models
Mines
Mining
Simulation
토목공학
entrainment of path material
granular flow
movement process
experiment
numerical simulation
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Summary:The experiment and numerical simulation were used to study the entrainment of path material by the granular flow. The effects of several factors on the entrainment were observed through the experiment. Research results show that when the granular flow passes on the loose material, the entrainment and deposition occur simultaneously. The final mass reduction in the entrainment area is a comprehensive performance of the entrainment and deposition. In general, the mass reduction in the entrainment area is directly proportional to the relative position of the source area and inversely proportional to the length of the entrainment area. The longer the entrainment area, the stronger the retarding effect on the granular flow Within the ability of the entrainment area to support grains, the deposition mass increases as the mass of the material from the source area increases. The numerical results show that the entrainment mainly passes through three main stages. In the first stage, the shear friction and collision between grains form a limited entrainment. In the second stage, the granular flow mainly scales up the entrainment by scraping. In the last stage, the rear part of the granular flow is deposited in the formed pit due to resistance.
ISSN:1226-7988
1976-3808
DOI:10.1007/s12205-019-1105-z