• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Acta Chimica Slovenica >Granular Matter Transport in Vertical Pipes: The Influence of Pipe Outlet Conditions on Gravity-driven Granular Flow
【24h】

Granular Matter Transport in Vertical Pipes: The Influence of Pipe Outlet Conditions on Gravity-driven Granular Flow

机译：垂直管道中的颗粒物质运输：管道出口条件对重力驱动的颗粒流的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Gravity transport of granular materials in vertical pipes is one of the most fundamental steps in bulk powder handling and processing. Presented study investigates powder flow characteristics in vertical pipes with open and closed outlets and condition of free powder fall. Powder flow of pharmaceutical grade powders was observed in transparent, vertical pipe model. Description of flow structures was performed. Powder volume flow rate, acceleration, and dilatation were quantified and correlated with powder properties. The results show that in pipes with a closed outlet the escaping air slows down the powder flow, resulting in a much slower flow than in pipes with an open outlet. A dense granular flow was detected in an open outlet condition, whereas in a closed outlet condition two concurrent flow regimes were observed: a slow moving, dense powder bed, and a fast dilute powder flow. Differences in flow regimes may promote segregation, with important implications to industrial processes.
机译：垂直管道中重力物料的重力运输是散装粉末处理和加工中最基本的步骤之一。目前的研究调查了有开闭出口的立式管道中粉末的流动特性以及粉末自由下落的情况。在透明的垂直管道模型中观察到药物级粉末的粉末流动。进行了流结构的描述。定量粉末体积流量，加速度和膨胀，并与粉末性质相关。结果表明，在出口封闭的管道中，逸出的空气会减慢粉末的流动，从而导致流动比在出口开放的管道中慢得多。在开放出口条件下检测到稠密的颗粒流，而在封闭出口条件下观察到两种并发的流态：缓慢移动的致密粉末床和快速稀释的粉末流。流动方式的差异可能会促进隔离，对工业过程产生重要影响。

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