Numerical study of droplet evaporation in coupled high-temperature and electrostatic fields

被引:5
作者
Zuo, Ziwen [1 ]
Wang, Junfeng [1 ]
Huo, Yuanping [1 ]
Fan, Yajun [1 ]
机构
[1] Jiangsu Univ, Sch Energy & Power Engn, Zhenjiang 086212013, Peoples R China
关键词
High temperature; evaporation; electrostatic field; droplet; ELECTRIC-FIELD; STREAM;
D O I
10.1177/1687814015575388
中图分类号
O414.1 [热力学];
学科分类号
摘要
The evaporation of a sessile water droplet under the coupled electrostatic and high-temperature fields is studied numerically. The leaky dielectric model and boiling point evaporation model are used for calculating the electric force and heat mass transfer. The free surface is captured using the volume of fluid method accounting for the variable surface tension and the transition of physical properties across the interface. The flow behaviors and temperature evolutions in different applied fields are predicted. It shows that in the coupled fields, the external electrostatic field restrains the flow inside the droplet and keeps a steady circulation. The flow velocity is reduced due to the interaction between electric body force and the force caused by temperature gradient. The heat transfer from air into the droplet is reduced by the lower flow velocity. The evaporation rate of the droplet in the high-temperature field is decreased.
引用
收藏
页码:1 / 11
页数:11
相关论文
共 14 条
[1]   DROPLET VAPORIZATION MODEL FOR SPRAY COMBUSTION CALCULATIONS [J].
ABRAMZON, B ;
SIRIGNANO, WA .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1989, 32 (09) :1605-1618
[2]   Efficiency of smoke removal by charged water droplets [J].
Balachandran, W ;
Jaworek, A ;
Krupa, A ;
Kulon, J ;
Lackowski, M .
JOURNAL OF ELECTROSTATICS, 2003, 58 (3-4) :209-220
[3]   Effects of an electric field on the surface tension of conducting drops [J].
Bateni, A. ;
Amirfazli, A. ;
Neumann, A. W. .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2006, 289 (1-3) :25-38
[4]   Initial Electrospreading of Aqueous Electrolyte Drops [J].
Chen, Longquan ;
Li, Chunli ;
van der Vegt, Nico F. A. ;
Auernhammer, Guenter K. ;
Bonaccurso, Elmar .
PHYSICAL REVIEW LETTERS, 2013, 110 (02)
[5]   Electric-field-induced ion evaporation from dielectric liquid -: art. no. 147602 [J].
Gamero-Castaño, M .
PHYSICAL REVIEW LETTERS, 2002, 89 (14)
[6]   DROPLET EVAPORATION IN HIGH-TEMPERATURE ENVIRONMENTS [J].
HARPOLE, GM .
JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1981, 103 (01) :86-91
[7]  
Hashinaga F., 1995, Food Sci. Technol. Int, V1, P77
[8]   VOLUME OF FLUID (VOF) METHOD FOR THE DYNAMICS OF FREE BOUNDARIES [J].
HIRT, CW ;
NICHOLS, BD .
JOURNAL OF COMPUTATIONAL PHYSICS, 1981, 39 (01) :201-225
[9]  
Lee W.H., 1980, Energy Div.. Los Alamos Sci. Lab., P407
[10]   NUMERICAL STUDY OF DROPLET EVAPORATION IN A HIGH-TEMPERATURE STREAM [J].
RENKSIZBULUT, M ;
YUEN, MC .
JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1983, 105 (02) :389-397