Title :
Dependence of the electrohydrodynamic flows structure in very non-uniform electric field on the charge formation mechanism
Author :
Stishkov, Yury ; Chirkov, Vladimir
Author_Institution :
Phys. Dept., St. Petersburg State Univ., St. Petersburg, Russia
Abstract :
A comparison of the steady-state electrohydrodynamic (EHD) flows structure in the needle-plane electrode system is carried out on the basis of the computer simulation results for injection and dissociation models of charge formation. The numerical computations of the EHD equations are performed with the software COMSOL Multiphysics 3.5 based on the finite element method. Part of the data obtained in the simulation is compared with the experimental ones to confirm the correctness of the proposed simulation method. Characteristic features of the flow structure are revealed for each mechanism of charge formation and some recommendations on the liquid choice for applied EHD device based on the discovered structure are given.
Keywords :
electrohydrodynamics; finite element analysis; flow simulation; EHD equations; applied EHD device; charge formation mechanism; computer simulation; dissociation model; finite element method; injection model; needle-plane electrode system; nonuniform electric field; numerical computations; simulation method; software COMSOL Multiphysics 3.5; steady-state electrohydrodynamic flow structure; Electric fields; Electrodes; Fluid flow; Fluids; Ions; Mathematical model; Space charge; Computer simulation; charge and kinematic structure; dissociation; weak and strong injection; weakly conducting liquids;
Conference_Titel :
Dielectric Liquids (ICDL), 2011 IEEE International Conference on
Conference_Location :
Trondheim
Print_ISBN :
978-1-4244-7352-6
Electronic_ISBN :
2153-3725
DOI :
10.1109/ICDL.2011.6015482
