Electric field effects during nucleate boiling from an artificial nucleation site

An experimental investigation of pool boiling heat transfer on smooth/rib surfaces under an electric field

“…The fog shape reflected the t = 0s t = 0.02s thermal convection distribution above the heating surface. Siedel et al [13] also observed similar phenomena in a single-phase flow. As mentioned previously, non-uniform distribution of the dielectric permittivity results in electroconvection, because the dielectric permittivity is a function of temperature.…”

Integral momentum balance on a growing bubble

“…As described bySiedel et al, 15 the superheated liquid is naturally rising and forming a plume at the center of the heated plate. The viscous liquid flow shears the bubble and the resultant viscous force applied on the bubble is in the flow direction.…”

“…The experimental apparatus, described by Siedel et al 14,15 is shown in Figure 1(a). It consists of a sealed 250 mm × 250 mm × 180 mm vessel.…”

“…This force is similar to that of a convective flow (see Mei and Klausner 7 ), except that convective flows are usually tangential to the heated wall. However, the liquid velocities implied in natural convection are at least an order of magnitude below the flow velocities of a shear flow: as depicted by Siedel et al,15 velocities in the plume are of the order of 5-10 mm s −1 . This shear flow forces can thus be neglected.…”

Numerical investigation on bubble dynamics during pool nucleate boiling in presence of a non-uniform electric field by LBM

“…Electrohydrodynamic (EHD) is an effective way to enhance the boiling heat transfer under microgravity. Using experimental method, some researchers studied the effect of EHD on bubble dynamics and heat transfer during pool boiling [1][2][3][4][5][6]. These authors performed numerous experimental researches, obtained abundant experimental data and proved that an external electric field could obviously affect heat transfer and bubble dynamics during pool boiling.…”