Experimental Study of Flow and Heat Transfer in Granular Media

IF 1.8 4区 工程技术 Q3 ENGINEERING, CHEMICAL Chemical Engineering & Technology Pub Date : 2024-04-05 DOI:10.1002/ceat.202100380
Zain Ul Shahidin, Muhammad Shafiq Siraj
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Abstract

In this paper, granular flow is studied using particle image velocimetry (PIV) in two different geometries, that is, rectangular box and cylindrical bladed mixer. Effects of parameters like blade rake angle, bed height, moisture content, and the number of blades were studied. The shear rate and velocity magnitude of granular bed were calculated using PIV. The presence of moisture in the granular bed added additional cohesive forces and reduced shear rate between different layers of particles. Shear rate and shear forces were maximal at the tip of the blade. Temperature variations in the granular bed were measured experimentally and results were compared for static and mixing beds.

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颗粒介质中的流动和传热实验研究
本文使用粒子图像测速仪(PIV)研究了两种不同几何形状(即矩形箱和圆柱形叶片混合器)中的颗粒流动。研究了叶片前角、床层高度、含水量和叶片数量等参数的影响。使用 PIV 计算了颗粒床的剪切率和速度大小。颗粒床中水分的存在增加了额外的内聚力,降低了不同颗粒层之间的剪切速率。叶片顶端的剪切速率和剪切力最大。实验测量了颗粒床的温度变化,并对静态床和混合床的结果进行了比较。
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来源期刊
Chemical Engineering & Technology
Chemical Engineering & Technology 工程技术-工程:化工
CiteScore
3.80
自引率
4.80%
发文量
315
审稿时长
5.5 months
期刊介绍: This is the journal for chemical engineers looking for first-hand information in all areas of chemical and process engineering. Chemical Engineering & Technology is: Competent with contributions written and refereed by outstanding professionals from around the world. Essential because it is an international forum for the exchange of ideas and experiences. Topical because its articles treat the very latest developments in the field.
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