Analysis of quasi-static conditions of boiling onset and bubble departure

Kirichenko, Yu. A.; Slobozhanin, Lev A.; Shcherbakova, N. S.

doi:10.1016/0011-2275(83)90125-x

Cited by 5 publications

(4 citation statements)

References 1 publication

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“…39 Correlation by McFadden and Grassman 53 has shown to agree well with the experimental data of liquid nitrogen. Kirichenko et al 44 have developed a semi-empirical correlation, based on the experimental data, through correcting the contact angle of the detached bubble. In the developed pool nucleate boiling, Jin et al 54 have nonetheless observed that the detachment frequency of coalesced bubbles remained almost unchanged with high wall heat fluxes and different heating surface materials in cryogenic liquids.…”

Section: Nucleation Frequencymentioning

confidence: 99%

“…Kirichenko et al. 44 and Bald 45 formulated the correlation for bubble departure diameter as a function to the critical cavity diameter due to the edge-break mechanism since small contact angles (ϕ<7.5o) have been observed in most metallic surfaces in cryogenic liquids.…”

Section: Closure Relationsmentioning

confidence: 99%

“…Kirichenko et al. 44 have developed a semi-empirical correlation, based on the experimental data, through correcting the contact angle of the detached bubble. In the developed pool nucleate boiling, Jin et al.…”

Section: Closure Relationsmentioning

confidence: 99%

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Computational fluid dynamics and population balance modelling of nucleate boiling of cryogenic liquids: Theoretical developments

Yeoh

Zhang²

2016

The Journal of Computational Multiphase Flows

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The main focus in the analysis of pool or flow boiling in saturated or subcooled conditions is the basic understanding of the phase change process through the heat transfer and wall heat flux partitioning at the heated wall and the two-phase bubble behaviours in the bulk liquid as they migrate away from the heated wall. This paper reviews the work in this rapid developing area with special reference to modelling nucleate boiling of cryogenic liquids in the context of computational fluid dynamics and associated theoretical developments. The partitioning of the wall heat flux at the heated wall into three components-single-phase convection, transient conduction and evaporation-remains the most popular mechanistic approach in predicting the heat transfer process during boiling. Nevertheless, the respective wall heat flux components generally require the determination of the active nucleation site density, bubble departure diameter and nucleation frequency, which are crucial to the proper prediction of the heat transfer process. Numerous empirical correlations presented in this paper have been developed to ascertain these three important parameters with some degree of success. Albeit the simplicity of empirical correlations, they remain applicable to only a narrow range of flow conditions. In order to extend the wall heat flux partitioning approach to a wider range of flow conditions, the fractal model proposed for the active nucleation site density, force balance model for bubble departing from the cavity and bubble lifting off from the heated wall and evaluation of nucleation frequency based on fundamental theory depict the many enhancements that can improve the mechanistic model predictions. The macroscopic consideration of the twophase boiling in the bulk liquid via the two-fluid model represents the most effective continuum approach in predicting the volume fraction and velocity distributions of each phase. Nevertheless, the interfacial mass, momentum and energy exchange terms that appear in the transport equations generally require the determination of the Sauter mean diameter or interfacial area concentration, which strongly governs the fluid flow and heat transfer in the bulk liquid. In order to accommodate the dynamically changing bubble sizes that are prevalent in the bulk liquid, the mechanistic approach based on the population balance model allows the appropriate prediction of local distributions of Sauter mean diameter or interfacial area concentration, which in turn can improve the predictions of the interfacial mass, momentum and energy exchanges that occur across the interface between the phases. Need for further developments are discussed.

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Section: Nucleation Frequencymentioning

confidence: 99%

Section: Closure Relationsmentioning

confidence: 99%

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Computational fluid dynamics and population balance modelling of nucleate boiling of cryogenic liquids: Theoretical developments

Yeoh

Zhang²

2016

The Journal of Computational Multiphase Flows

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“…As a result of that, it will establish a multi-fluid numerical model, and simulate the heat and mass transferring process of LNG releasing underwater by FLUENT software. [4][5][6][7][8] Multi-fluid model is established by two-fluid principal, and its basic idea is: all phases in the flow field are interpenetrable continuous medium, which meets respective conservation equations; conservation equations of all phases is used to simulate equilibrium relationships of mass, momentum and energy; interaction of each phase is coupled by interphase transferring model of conservation equations.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Boiling Flow in LNG Releasing Underwater Process

Zhang

et al. 2013

AMM

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The boiling flow of LNG releasing underwater was numerically simulated by establishing liquid-liquid boiling flow transfer models and using multi-fluid model in FLUENT. The effects of quenching, average bubble diameter and turbulencemodel on the characteristics of hydrodynamic, heat and mass transfer processes were demonstrated. The results showed that in the progress of heat transfer between LNG and water, surface quenching makes an important role. The heat and mass transfer rate was influenced by valuing average bubblesdiameter. Because of per-phase turbulent flow making an equilibration important role in boiling flow process, turbulence models must be simulated respectively.

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A review of the stability of disconnected equilibrium capillary surfaces

Alexander

Slobozhanin

2004

Microgravity Sci. Technol

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Analysis of quasi-static conditions of boiling onset and bubble departure

Cited by 5 publications

References 1 publication

Computational fluid dynamics and population balance modelling of nucleate boiling of cryogenic liquids: Theoretical developments

Computational fluid dynamics and population balance modelling of nucleate boiling of cryogenic liquids: Theoretical developments

Numerical Simulation of Boiling Flow in LNG Releasing Underwater Process

A review of the stability of disconnected equilibrium capillary surfaces

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