Influence of feed viscosity on the two-phase flow inside the exit orifice of an effervescent atomizer and on resulting spray characteristics
Influence of feed viscosity on the two-phase flow inside the exit orifice of an effervescent atomizer and on resulting spray characteristics
复制标题
进料粘度对泡腾雾化器出口孔内两相流及其喷雾特性的影响
DOI:
10.1016/j.foodres.2015.04.047
复制
发表时间:
2015
影响因子:
8.1
通讯作者:
Schuchmann
中科院分区:
文献类型:
--
作者:
Stähle;Gaukel;Schuchmann
The effervescent atomizer, originally developed for combustion applications, is reported to atomize viscous liquids into small drops at low working costs. This offers the possibility to enhance the energy efficiency of spray drying foodstuffs by the atomization of a higher concentrated feedstock. For a stable drying process a steady formation of small drops must be ensured which depends mainly on the two-phase flow inside the exit orifice. In this study, the influence of the viscosity of a food based liquid on the flow pattern inside the exit orifice was investigated by measuring the time-dependent gas phase distribution using an optical sensor. Further, the spray in the near nozzle region as well as the shape and the size of the spray drops was characterized by means of shadowgraphy. The results indicate an atomization into small and spherical drops when an annular flow is formed inside the exit orifice. In contrast, very large and deformed spray drops are present for a slug flow, which are critical for spray drying purposes.
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DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
P. Stähle;V. Gaukel;H. Schuchmann
通讯作者:
H. Schuchmann
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
Madan Mohan Avulapati;R. Ravikrishna
通讯作者:
R. Ravikrishna
影响因子:
1.2
作者:
Schröder;Günther;Schuchmann;Gaukel
通讯作者:
Gaukel
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
J. Chin
通讯作者:
J. Chin