Ultrasonic measurements of the bulk flow field in foams.
Ultrasonic measurements of the bulk flow field in foams.
复制标题
泡沫体整体流场的超声波测量
DOI:
10.1103/physreve.97.013113
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Heitkam
中科院分区:
文献类型:
--
作者:
Nauber;Büttner;Eckert;Fröhlich;Czarske;Heitkam
The flow field of moving foams is relevant for basic research and for the optimization of industrial processes such as froth flotation. However, no adequate measurement technique exists for the local velocity distribution inside the foam bulk. We have investigated the ultrasound Doppler velocimetry (UDV), providing the first two-dimensional, non-invasive velocity measurement technique with an adequate spatialand temporal resolutionthat is applicable to medium scale foam flows. The measurement object is dry aqueous foam flowing upward in a rectangular channel. An array of ultrasound transducers is mounted within the channel, sending pulses along the main flow axis, and receiving echoes from the foam bulk. This results in a temporally and spatially resolved, planar velocity field up to a measurement depth of, which is approximately one order of magnitude larger than those of optical techniques. A comparison with optical reference measurements of the surface velocity of the foam allows to validate the UDV results. Atframe rate an uncertainty below 15 percent and an axial spatial resolution better thanis found. Therefore, UDV is a suitable tool for monitoring of industrial processes as well as the scientific investigation of three-dimensional foam flows on medium scales.
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影响因子:
2.4
作者:
L. Büttner;R. Nauber;M. Burger;D. Räbiger;S. Franke;S. Eckert;J. Czarske
通讯作者:
J. Czarske
DOI:
10.1016/j.colsurfa.2015.01.006
发表时间:
2015
期刊:
Colloids and Surfaces A: Physicochemical and Engineering Aspects
影响因子:
--
作者:
Ariane Bronfort;H. Caps
通讯作者:
H. Caps
DOI:
10.1140/epjst/e2013-01795-1
发表时间:
2013
期刊:
The European Physical Journal Special Topics
影响因子:
--
作者:
R. Nauber;M. Burger;L. Büttner;S. Franke;D. Räbiger;S. Eckert;J. Czarske
通讯作者:
J. Czarske
DOI:
10.1016/j.colsurfa.2006.11.057
发表时间:
2007
期刊:
Colloids and Surfaces A: Physicochemical and Engineering Aspects
影响因子:
--
作者:
A. V. D. Net;L. Blondel;A. Saugey;W. Drenckhan
通讯作者:
W. Drenckhan
影响因子:
1.8
作者:
Pierre, Juliette;Guillermic, Reine-Marie;Leroy, Valentin
通讯作者:
Leroy, Valentin