The equilibrium contact angle of ammonia-stainless steel interface

Vasyl, Ruzaikin V.; Lukashov, Ivan; Fedorenko, Tetiana; Abashin, Sergey

doi:10.1016/j.rineng.2022.100691

Cited by 12 publications

(1 citation statement)

References 30 publications

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“…The reliable of VOF model with Lee phase change model in predicting flow boiling characteristics in microchannel has been validated by a lot of studies. In this paper, the validate calculation of our two phase flow boiling model are performed for a stainless steel circular tube with D h =1.224mm, L=245mm and uniform heat flux by comparing the numerical results with empirical correlation [18][19][20] at G=100kg/(m 2 •s), q=10341~30750W/m 2 , T sat =316.15K and θ=19.3º [21]. As Table 3 shows, the relative errors of ammonia flow boiling pressure drop between present results and empirical correlation provided by Maqbool et al [18] are within 15.9%.…”

Section: Model Validationmentioning

confidence: 99%

3D numerical investigation on flow boiling characteristics in large length-to-diameter ratio microchannel

Huang,

Chen,

Peng

et al. 2023

J. Phys.: Conf. Ser.

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To meet the demand of thermal management with large power and high heat flux in the future engineering applications, more and more attentions have been draw to develop the two-phase microchannel cooling technology. In this work, a three dimensional numerical investigation is performed to study the influence of mass flux and heat flux on the two phase flow boiling characteristics in a single microchannel with large length-to-diameter ratio. The related calculation results show that the Volume of Fluid (VOF) model coupled with Lee model can predict the two phase pressure drop and heat transfer coefficient of the microchannel well. And the flow patterns in the microchannel are classified as bubbly flow, slug flow and annular flow, which can be captured by this numerical model precisely. Besides, the transient pressure drop augments with the increase of mass flux. But the effect of mass flux on the amplitude of quasi-steady pressure drop and the peak value of time-averaged heat transfer coefficient along the microchannel is small. At last, the amplitude of quasi-steady pressure drop increases with the augmentation of heat flux. The maximum and fully developed time-averaged heat transfer coefficients along the microchannel increase with the heat flux.

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