• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Micromechanics of Granular Media >Mean Force On A Wall Overflowed By Dense Granular Avalanches: Discrete Numerical Simulations
【24h】

Mean Force On A Wall Overflowed By Dense Granular Avalanches: Discrete Numerical Simulations

机译：墙壁上的平均力由致密的粒状雪崩溢出：离散数值模拟

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Using discrete elements simulations, we investigated 2D unsteady granular flows down a rough inclined plane and overflowing a wall, for a large range of slope inclinations. We first characterized flows without any obstacle by measuring time evolution of flow depth, mean velocity and volume fraction. These unsteady flows display similar scalings as ones observed for steady and uniform flows. We then introduced a wall normal to the bottom and we measured the mean force exerted by the incoming flow. Two regimes appear, a dense and a collisional regime, depending on the slope inclination and for which the mean force strongly differs. We attempted to compare the mean force with two typical forces linked to the control flow without obstacle for both regimes. The comparison highlights an important contribution due to a stagnant zone formed in front of the obstacle, particularly in the dense regime and the transition towards a static regime.
机译：使用离散元素模拟，我们调查了2D不稳定的颗粒流下粗糙倾斜平面并溢出墙壁，用于大量的坡度倾斜度。我们首先通过测量流动深度，平均速度和体积分数的时间演变来表征流动而没有任何障碍物。这些不稳定的流量显示相似的缩放，因为观察到稳定和均匀的流动。然后，我们将垂直的墙介绍，我们测量了进入流动施加的平均力。根据斜坡倾斜度和平均力强烈不同，两个制度出现，密集和碰撞制度。我们试图将平均力与两个典型力进行比较，与控制流有关的两个典型力而没有障碍。比较突出了由于在障碍物前面形成的停滞区域而产生的重要贡献，特别是在密集的状态下和朝向静态状态的过渡。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号