Positron emission particle tracking in a mechanically agitated solid-liquid suspension of coarse particles

被引：40

作者：

Guida, A. ^{[1
]}

Fan, X. ^{[2
]}

Parker, D. J. ^{[2
]}

Nienow, A. W. ^{[1
]}

Barigou, M. ^{[1
]}

机构：

[1] Univ Birmingham, Sch Chem Engn, Birmingham B15 2TT, W Midlands, England

[2] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

来源：

CHEMICAL ENGINEERING RESEARCH & DESIGN | 2009年 / 87卷 / 4A期

基金：

英国工程与自然科学研究理事会;

关键词：

Mixing; PBT impeller; PEPT; Suspension; Two-phase flow; Solid-liquid; SINGLE-PARTICLE; STIRRED VESSEL; FLOW; PEPT;

D O I：

10.1016/j.cherd.2008.12.001

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The technique of positron emission particle tracking (PEPT) is a unique non-intrusive Lagrangian flow visualisation technique which allows probing of opaque fluids and within opaque apparatus. It uses a single positron-emitting particle as flow tracer which is tracked in 3D space and time to reveal its full Lagrangian trajectory. PEPT was used to study the mixing of a concentrated suspension of coarse glass particles, containing up to 10.6 wt% solids, in a vessel agitated by a pitched blade turbine operating in both up-pumping and down-pumping modes. The Lagrangian information obtained was used to obtain a detailed Eulerian description of the two-phase flow inside the vessel. For the first time, it has; been possible to determine the full 3D velocity and concentration fields of both the liquid and the solid phase within an opaque flow of this type. (C) 2008 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：421 / 429

页数：9

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