Electrohydrodynamic instability of charged drops at external affects

Author

Bologa, Al.M. ; Bologa, An.M.

Author_Institution

Inst. of Power Eng., Acad. of Sci. of Moldova, Chisinau, Moldova

Volume

2

fYear

2000

fDate

2000

Firstpage

777

Abstract

Electrohydrodynamic instability of charged droplets is the phenomenon observed when the electrostatic forces acting on the charged drop is larger than the surface tension force. In the double phase gel-liquid system, a charged droplet is characterized by hydrogasodynamic and electrohydrodynamic instability. Aerodynamic forces and external electric field determine charged droplet geometry changing. It is shown that naturally charged droplets obviously do not reach their electrohydrodynamic instability. The influence of external affects on droplets charged in external electric field is analyzed. The process of heat and mass transfer in the double phase gas-liquid system is one of the main factors that influences charged droplet electrohydrodynamic instability. The results of influence of liquid and gas temperature and pressure on charged droplet electrohydrodynamic instability are presented

Keywords

drops; electrohydrodynamics; flow instability; heat transfer; mass transfer; surface tension; two-phase flow; aerodynamic forces; charged droplet; charged droplet geometry; charged drops; double phase gas-liquid system; double phase gel-liquid system; electrohydrodynamic instability; electrostatic forces; external affects; external electric field; gas temperature; heat transfer; hydrogasodynamic instability; liquid temperature; mass transfer; naturally charged droplets; surface tension force; Aerodynamics; Aerosols; Electrohydrodynamics; Electrostatics; Geometry; Heat transfer; Power engineering; Stability; Surface tension; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2000. Conference Record of the 2000 IEEE

Conference_Location

Rome

ISSN

0197-2618

Print_ISBN

0-7803-6401-5

Type

conf

DOI

10.1109/IAS.2000.881918

Filename

881918