World Environmental and Water Resources Congress 2019
Effect of Shear Velocity on Fluctuation Energy for Collisional Granular Flows of Frictional Particles at Flat Walls
Publication: World Environmental and Water Resources Congress 2019: Hydraulics, Waterways, and Water Distribution Systems Analysis
ABSTRACT
The flux of fluctuation energy for collisional particles, which plays an important role in bounded granular flows, was investigated based on the kinetic theory for granular flows. In order to determine the fluctuation energy during collisions between solid walls and particles experiencing apparent shears, a second-order approximation solution to the Boltzmann equation to determine the velocity distribution function of particles was used, which makes it possible for us to discuss how a shear rate affects the fluctuation energy flux in bounded granular flows. Comparisons with numerical simulations and previous theories were presented, which shows that the predicted fluctuation energy flux and simulation results are in well agreement under different conditions.
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Acknowledgements
Financial support from the National Key R&D Program of China (Grant No. 2016YFC0402305), the National Science Foundation of China (NSFC, Grant No. 51609264), and the Scientific Program of China institute of Water Resources and Hydropower Research (Grant No. SE0145B702017) are gratefully acknowledged.
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Information & Authors
Information
Published In
World Environmental and Water Resources Congress 2019: Hydraulics, Waterways, and Water Distribution Systems Analysis
Pages: 89 - 98
Editors: Gregory F. Scott and William Hamilton, Ph.D.
ISBN (Online): 978-0-7844-8235-3
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: May 16, 2019
Published in print: May 16, 2019
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