Investigation of film boiling at a liquid-liquid contact

Dixit, Ayush  Kumar; Kumar, Rupak; Das, Arup Kumar

doi:10.1016/j.ijheatmasstransfer.2022.123234

Cited by 4 publications

(1 citation statement)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For atmospheric codition simulations (in a λ B × λ B domain), the vapor–liquid interface was provided following the equation y = λ 64 true( 4 + cos ( 2 π x λ ) true) where λ is Taylor’s most dangerous wavelength, and y is the thickness of the film. The equation is commensurate with the conditions used by Dixit et al For the larger domain simulations (3λ B × 3λ B ), a similar equation was adopted with the multiplication of random numbers. The bulk liquid was considered at a constant temperature T sat throughout the simulation.…”

Section: Methodsmentioning

confidence: 99%

Study of Cryogenic Film Boiling in the Presence of External Electric Field Using a Variant of Volume of Fluid-Based Interface Tracking Algorithm

Kumar

Hens

Lahiri

et al. 2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

The study of film boiling of cryogenic fluids has become a topic of interest due to its applications in several areas, including electronic cooling and space vehicles. In this paper, numerical simulations were conducted to investigate the film boiling of liquid nitrogen using a variant of the volume of fluid (VOF)-based algorithm. The effects of wall superheats and electric fields on the bubble dynamics during film boiling at normal atmospheric pressure and near-critical conditions were investigated. It was observed that bubble formation during film boiling of liquid nitrogen at lower wall superheats was governed by Rayleigh−Taylor instability. However, at higher wall superheats, bubble spacing decreased with the appearance of additional bubbles. The average heat transfer rate increased with an increasing wall superheat. The electric field significantly influences the film boiling up to a specific limit of wall superheat. At a higher wall superheat, the influence of the electric field was suppressed by the enhanced thermal effect. It was observed that the impact of the electric field on film boiling is highly dependent on the dielectric permittivity difference between the liquid and vapor phases. Faster bubble detachment and reduced bubble spacing were noticed in the presence of an applied external electric field.

show abstract