Investigation of vapor condensation on a flat plate and horizontal cryogenic tube using lattice Boltzmann method

Hatani, M. Abbasi; Farhadzadeh, Mohsen; Rahimian, Mohammad Hassan

doi:10.1016/j.icheatmasstransfer.2015.06.011

Cited by 19 publications

(6 citation statements)

References 33 publications

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“…As the liquid film moves forward, the necking phenomenon appears and the first drop departs from the horizontal tube at about

t_{4}

. This phenomenon is consistent with the falling of liquid film in condensation …”

Section: Resultssupporting

confidence: 79%

“…The developed model was validated successfully by Safari for simulation of two‐dimensional droplet evaporation. Begmohammadi et al used the phase‐change model of Safari to simulate nucleate pool boiling, and Hatani et al applied this model to investigate the vapor condensation, liquid film formation, and dewdrop sprinkling from a cryogenic horizontal tube. In these studies, the modified curved boundary treatment of Filippova and Hänel (FH) was used and the results were successfully validated by previous correlations.…”

Section: Introductionmentioning

confidence: 99%

“…This phenomenon is consistent with the falling of liquid film in condensation. 21 The evaporation rate around the tube is shown in Figure 12. As can be seen, it decreases over time until the falling film surrounds the cylinder at t t = 0.88 0 .…”

mentioning

confidence: 99%

“…Also, Cahn and Hilliard related the mixing energy density to composition by ∇ the bulk energy with β being a constant. Given the interface thickness ξ and the constant β, one can compute the gradient parameter k βξ = /and the interfacial tension between fluids σ kβ = 2 /621…”

mentioning

confidence: 99%

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Experience on horizontal‐tube falling‐film evaporation simulation by lattice‐Boltzmann method

Bajalan

Kouhikamali

Rahimian

2019

Heat Trans. Asian Res.

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Complex heat and mass transfers through falling‐film or spray‐film evaporation are widely used in chemical, refrigeration, petroleum refining, desalination, and food industries. Considering that microscopic effects, like surface tension, flow, mass, and heat transfers, are interdependent phenomena, the high‐precision simulation of falling‐film evaporation through a mesoscopic method is of great importance. In the current study, the lattice‐Boltzmann method and the phase‐field model with a proper source term are used for evaporation simulation in a horizontal‐tube falling film. Here, the curvature of the tube is captured by appropriate boundary conditions. Nondimensional numbers and the geometry of the model are determined in a range of practical values. By comparing the film thickness, mass, and heat transfer with valid references in the literature, an acceptable agreement is observed, which reveals the effectiveness of this method in understanding the details and predictions. Overall, the time evolution of temperature contours and streamlines during falling‐film evaporation approves the superiority of this method in keeping details along with lower difficulty and cost compared with the classical methods.

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“…As the liquid film moves forward, the necking phenomenon appears and the first drop departs from the horizontal tube at about

t_{4}

. This phenomenon is consistent with the falling of liquid film in condensation …”

Section: Resultssupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Experience on horizontal‐tube falling‐film evaporation simulation by lattice‐Boltzmann method

Bajalan

Kouhikamali

Rahimian

2019

Heat Trans. Asian Res.

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“…Hatani et al. 32 tried the free-energy-based LB model to reproduce the vapor condensation on a horizontal cryogenic tube and the heat transfer coefficient was calculated. Ashrafi and Moosavi 33 and Guo and Cheng 34 recently investigated the droplet condensation on structured surfaces.…”

Section: Introductionmentioning

confidence: 99%

Lattice Boltzmann simulation of droplet condensation on a surface with wettability gradient

Shen

Liu

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this paper, a free energy lattice Boltzmann model of vapor condensation on a surface with a wettability gradient is developed and numerically analyzed to understand the microscopic behaviors of self-propelled droplet condensation. The effect of wettability gradient on droplet self-motion and coalescence as well as vapor condensation is examined and investigated. The condensation rate is presented during the whole droplet condensation process to analyze the role of wettability gradient on droplet condensation. The results indicate that the surface with wettability gradient is preferred for vapor condensation owing to the appearance of self-propelled droplet condensation. Condensate film is initially spread on the high surface energy region, and liquid nucleation sites form, grow and, subsequently, coalesce with other droplets on low surface energy regions. The condensation rate is higher on a surface with a larger wettability gradient due to the more effective removal of condensate. In addition, the condensation rate fluctuates with time at the quasi-steady-state stage. During the condensation process, the droplet coalescence triggers a sudden peak of condensation rate, and the generation of new nucleation results in a rapid increase in the condensation rate.

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Numerical simulation of droplet evaporation in three-component multiphase flows using lattice Boltzmann method

Latifiyan

Rahimian²,

Haghani-Hassan-Abadi³

et al. 2022

Acta Mech

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Investigation of vapor condensation on a flat plate and horizontal cryogenic tube using lattice Boltzmann method

Cited by 19 publications

References 33 publications

Experience on horizontal‐tube falling‐film evaporation simulation by lattice‐Boltzmann method

Experience on horizontal‐tube falling‐film evaporation simulation by lattice‐Boltzmann method

Lattice Boltzmann simulation of droplet condensation on a surface with wettability gradient

Numerical simulation of droplet evaporation in three-component multiphase flows using lattice Boltzmann method

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