Particle Shadow Velocimetry (PSV) in bubbly flows

被引：31
|
作者：
Hessenkemper, H. [1 ]
Ziegenhein, T. [1 ]
机构：
[1] Helmholtz Zentrum Dresden Rossendorf eV, D-01314 Dresden, Germany
来源：
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW | 2018年 / 106卷
关键词：
Particle Shadow Velocimetry; Multiphase flow; Bubbly flow; Particle Image Velocimetry; Particle Tracking Velocimetry; IMAGE VELOCIMETRY;
D O I：
10.1016/j.ijmultiphaseflow.2018.04.015
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The interaction of gas bubbles and the surrounding liquid in bubbly flows is a complex hydrodynamic phenomenon. Precise measurements of the liquid velocity are mandatory to generate accurate models and CFD-validation data sets. For this purpose, methods for Particle Shadow Velocimetry (PSV) that are using a volume illumination and a small depth of field (DOF) are developed in the presented work. Experiments with an oscillating plume were conducted in a rectangular bubble column to test the PSV methods. The results obtained with a Particle Image Velocimetry (PIV) and a Particle Tracking Velocimetry (PTV) processing procedure agree very well with respect to velocity profiles and turbulence parameters. As discussed in previous work, PSV methods have a much simpler experimental setup and can handle much higher gas fractions. With the present findings, robust PSV algorithms for PIV and PTV in bubbly flows are now available. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：268 / 279
页数：12
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