Ferrofluid droplet vaporization under very large magnetic power: Effects of pressure and effective thermal conductivity of liquid

Cristaldo, Cesar; Vargas, Maycol M.; Fachini, Fernando F.

doi:10.1016/j.proci.2014.06.009

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…A PFPE based ferro uid was prepared and characterized by Black et al [15] , which was found to have low volatility under high temperature.Li et al [16] calculated the evaporation rate of hydrocarbon based and uorocarbon based ferro uid under four different vacuum levels. Cristaldo et al [17][18][19] numerically analyzed heating process of ferro uid droplet under an alternating magnetic eld with a thermal boundary layer model. Bolotov et al derived equations of evaporation rate to estimate the life of a tribounit with ferro uid in the ambience of a vacuum [20] and a gas [21] .…”

Section: Introductionmentioning

confidence: 99%

An Experimental Validation Study of Ferrofluid Evaporation

Niu

2021

Preprint

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Kerosene based ferrofluid was put into a test tube to evaporate under different conditions. The weight losses of samples were measured and the evaporation rates were calculated. The predictions of evaporation rates were made based on Bolotov’s model. It was found that the magnetic particles prevent the base fluid from evaporation and lower volume fraction leaded to higher evaporation rate. Bolotov’s model had a certain deviation but still well responsive to different variables. It was also found that the magnetic field made a difference to the evaporation rate.

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Section: Introductionmentioning

confidence: 99%

An Experimental Validation Study of Ferrofluid Evaporation

Niu

2021

Preprint

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An Experimental Validation Study on Ferrofluid Evaporation

Niu

2022

Chin. J. Mech. Eng.

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The current research on the evaporation of ferrofluids mainly focuses on the characterization of ultra-low vapor pressure ferrofluids in vacuum and the theoretical analysis of the evaporation process. Few studies have focused on the experimental validation of the proposed evaporation rate equations and on the comparison of the differences in ferrofluid evaporation. In this study, based on the Bolotov’s model, an evaporation rate equation is deduced from the experimental model. The experimental study included a comparison of the evaporation, magnetic particle volume fraction, temperature, height of the fluid surface from the outlet, and magnetic field of a kerosene-based ferrofluid and its base carrier liquid. The prepared sample was evaporated in a test tube, and the evaporation rate was calculated by measuring the weight loss of the sample. The experimental results show that the evaporation rate of the base carrier liquid is higher than that of the ferrofluid. The smaller the volume fraction of the magnetic particles, the greater the evaporation rate. The magnetic particles play a key role in preventing evaporation of the base liquid. The higher the temperature, the smaller the deviation of the evaporation rate from the predicted value. The evaporation rates obtained by the two control groups at the height of the fluid surface from the outlet were lower than the predict value. The magnetic field had a certain promotional effect on the evaporation of the ferrofluid. The experimental results were consistent with the results obtained using Bolotov’s model. This research validates Bolotov’s model and shows that the model is somewhat biased but still responds well to different variables.

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Ferrofluid droplet vaporization under very large magnetic power: Effects of pressure and effective thermal conductivity of liquid

Cited by 2 publications

References 33 publications

An Experimental Validation Study of Ferrofluid Evaporation

An Experimental Validation Study of Ferrofluid Evaporation

An Experimental Validation Study on Ferrofluid Evaporation

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