A New Approach for Calculating the Mass Flow Rate of Entrained Air in a Freefalling Material Stream
A New Approach for Calculating the Mass Flow Rate of Entrained Air in a Freefalling Material Stream
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DOI：
10.1080/02726351.2012.715617
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发表时间：
2013-04
影响因子：
2.5
通讯作者：
A. A. Esmaili-A.;T. Donohue;C. Wheeler;W. Mcbride;A. Roberts
中科院分区：
文献类型：
--
作者：
A. A. Esmaili-A.;T. Donohue;C. Wheeler;W. Mcbride;A. Roberts
本文介绍了一系列物理实验的结果，以测量在自由落体颗粒流中遇到的空气夹带率。提出的实验工作跨越了一系列的颗粒参数和料斗的几何形状。根据这些结果，发展并提出了一种预测空气卷吸的新理论。这种新方法是专门开发的，以促进更好地了解与材料处理系统相关的扬尘控制领域，这是由自由落体过程中的空气夹带驱动的。从本文所介绍的工作中可以看出，在约束或无约束系统中更好地预测自由落体散装材料的能力，将有助于优化被动或主动粉尘控制策略。本文介绍了几个不同的部分，详细的实验工作，用于确定自由落体流参数，进行允许夹带方程的发展。
This article presents the outcomes from a series of physical experiments to measure the air entrainment rates encountered within a stream of freefalling particles. The experimental work presented spans a range of particle parameters and hopper geometries. From these results a new theory for the prediction of air entrainment is developed and presented. This new method was developed specifically to facilitate a better understanding in the area of fugitive dust control associated with material handling systems, which are driven by the air entrainment during freefalling. From the work presented in this article, a better prediction capability of freefalling bulk materials in either constrained, or unconstrained systems, will allow for the optimization of either passive or active dust control strategies. This article presents several distinct sections that detail the experimental work used to determine the freefall stream parameters that were conducted to allow the development of the entrainment equations.