弗劳德数
机械
标度律
缩放比例
粒状材料
流量(数学)
动能
障碍物
水跃
物理
地质学
经典力学
岩土工程
几何学
法学
数学
政治学
作者
Thierry Faug,Paolo Caccamo,Benoit Chanut
摘要
A scaling law is proposed to describe the force experienced by a wall‐like obstacle overflowed by a granular avalanche‐flow when a stagnant zone is formed upstream from the wall and co‐exists with an inertial zone above without granular jump. It relates the force on the wall relative to the force due to the kinetic energy of the undisturbed incident flow to (i) the Froude number, (ii) the wall height relative to the flow thickness, (iii) the slope angle and (iv) the various parameters associated with the properties of the flowing granular material. The scaling law is compared to small‐scale discrete numerical simulations in two dimensions and data from granular laboratory tests. Finally, we discuss on the applicability of the new model to the full‐scale granular flows.
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