Influence of nozzle design on flow, mixing, and fluidisation in a bubbling bed fluidised by a single nozzle

IF 1.9 4区工程技术 Q3 MECHANICS

Mechanics Research Communications Pub Date : 2023-10-01 DOI:10.1016/j.mechrescom.2023.104180

D. Werner , C.R.K. Windows-Yule , Tz. Kokalova-Wheldon , J.P.K. Seville

引用次数: 0

Abstract

In this paper we apply, for the first time, positron emission particle tracking (PEPT) to a fluidised bed in which gas is injected through a nozzle-type distributor. The detailed, three-dimensional data obtained provide direct insight into how the angle of the orifices through which gas is injected affects the fluidisation, mixing, and flow patterns observed within the bed. Our results show that the fastest and most consistent recirculation of material – an indicator of good mixing – as well as the most complete fluidisation may be achieved by using a nozzle with horizontal- or near-horizontal outlets.

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喷嘴设计对单喷嘴流化床中流动、混合和流化的影响

在本文中，我们首次将正电子发射粒子跟踪(PEPT)应用于通过喷嘴型分布器注入气体的流化床。获得的详细的三维数据可以直接了解气体注入孔的角度如何影响床层内观察到的流化、混合和流动模式。我们的结果表明，通过使用具有水平或近水平出口的喷嘴，可以实现最快和最一致的物料再循环-这是良好混合的一个指标-以及最完全的流化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Mechanics Research Communications 物理-力学

CiteScore

4.10

自引率

4.20%

发文量

114

审稿时长

9 months

期刊介绍： Mechanics Research Communications publishes, as rapidly as possible, peer-reviewed manuscripts of high standards but restricted length. It aims to provide: • a fast means of communication • an exchange of ideas among workers in mechanics • an effective method of bringing new results quickly to the public • an informal vehicle for the discussion • of ideas that may still be in the formative stages The field of Mechanics will be understood to encompass the behavior of continua, fluids, solids, particles and their mixtures. Submissions must contain a strong, novel contribution to the field of mechanics, and ideally should be focused on current issues in the field involving theoretical, experimental and/or applied research, preferably within the broad expertise encompassed by the Board of Associate Editors. Deviations from these areas should be discussed in advance with the Editor-in-Chief.