Measurement and discrete element simulation of a fixed-obstacle disturbed rapid granular chute flow

NCUIR > administration > Office of Secretariat > journal & Dissertation > Item 987654321/104780

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/104780

Title:	Measurement and discrete element simulation of a fixed-obstacle disturbed rapid granular chute flow
Authors:	蕭述三;Kuo, Chih-Yu;Sheng, Li-Tsung;Chiu, Shang-Yu;Yang, Yan-Zhi;Tai, Yih-Chin;Hsiau, Shu-San
Contributors:	秘書室
Keywords:	Discrete element method;Flow characteristics;Fluid dynamics;Inclination;Kinetic theory;Physics;Simulation;Velocity distribution
Date:	2015-01-29
Issue Date:	2026-04-23 11:57:56 (UTC+8)
Publisher:	American Institute of Physics;Melville: American Institute of Physics
Abstract:	摘要： We describe the experimental measurements and discrete element simulations of steady rapid granular chute flows disturbed by a small fixed semi-cylindrical obstacle. The flow chute has a width of 5 cm, a length of 150 cm, an inclination of 30°, with an obstacle installed at approximately the center of the chute. The steady disturbed flow has a region that exhibits substantial but smooth changes in flow characteristics, like a very diffused weak shock. Our measurements include the streamwise flow depth, velocity, and flux-averaged solid fraction. We compare the velocity profile from far upstream of the disturbed flow region with the prediction of an analytical solution based on the kinetic theory. We construct a control volume method to calculate the force exerted by the obstacle on the flow based on the influenced distance of the obstacle. Comparison showed satisfactory agreement between the measured obstacle forces with the discrete element simulations. 出版者： Melville: American Institute of Physics 出版日期： 2015-01-01 出處： Physics of fluids (1994), 2015-01, Vol.27 (1) 資源來源： AIP Journals (American Institute of Physics) 版權： 2015 AIP Publishing LLC. 識別號： ISSN: 1070-6631 識別號： EISSN: 1089-7666 識別號： DOI: 10.1063/1.4906769
Appears in Collections:	[Office of Secretariat] journal & Dissertation

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	33	View/Open

社群 sharing

Loading...