M. Wawzyniak et J. Seyed-yagoobi, Electrohydrodynamic induction pumping of a stratified liquid/vapor medium in the presence of volumetric and interface electric charges, IEEE IND AP, 37(4), 2001, pp. 950-958
Electrohydrodynamic (EHD) pumping of two-phase media has potential applicat
ions related to both pure pumping as well as heat transfer enhancement. Uti
lization as pumping mechanism is attractive for terrestrial and outer space
systems. Augmentation of mass flow rate in two-phase heat transfer applica
tions, such as boiling and condensation, leads to enhanced heat transfer co
efficients, thus making EHD pumping an attractive candidate for these situa
tions. A theoretical model is presented for EHD induction pumping of a stra
tified liquid/vapor medium accounting for electric shear stresses due to in
terfacial and bulk charges. Bulk charges are a result of temperature gradie
nt in the liquid phase of the fluid. Conditions are established under which
the bulk effect plays a significant role in the pumping process.