Brief Review of Latest Direct Numerical Simulation on Pool and Film Boiling

Kunugi, Tomoaki

doi:10.5516/net.02.2012.717

Cited by 25 publications

(22 citation statements)

References 86 publications

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“…It can be seen from this figure that, similar with the heat flux, the heat transfer coefficient increases rapidly after the ONB point, and significantly drops after reaches its maximum value. The corresponding superheat of the maximum heat transfer coefficient is at Ja=0.176~0.186，which is smaller than the heat flux at the CHF [52]. The tendency agrees with the simulated results in previous research, except that the different between the superheat at the maximum heat transfer coefficient and the CHF is smaller than the previous studies [29,30].…”

Section: Boiling Curve and Boiling Regimessupporting

confidence: 89%

2D Simulation of boiling heat transfer on the wall with an improved hybrid lattice Boltzmann model

Liu

2019

Applied Thermal Engineering

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Section: Boiling Curve and Boiling Regimessupporting

confidence: 89%

2D Simulation of boiling heat transfer on the wall with an improved hybrid lattice Boltzmann model

Liu

2019

Applied Thermal Engineering

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“…Nukiyaman is one of the pioneers in boiling research. He experimentally [5] measured the heat transmitted from metal to boiling water over a wide range of wall superheats and qualitatively established the pool boiling curve, which is an important corner-stone for boiling research and helps to distinguish different regimes in pool boiling [6]. Today, it is widely recognized that the pool boiling with controlled surface temperature can be divided into three distinct regimes [1,3,6]: nucleate boiling, transition boiling, and film boiling.…”

Section: Introductionmentioning

confidence: 99%

“…With the rapid development of computer technology, numerical simulations of boiling phenomena gradually play an important role in investigating the mechanism and the heat transfer characteristics of boiling [6]. The first attempt was made by Son and Dhir [7,8], who studied the evolution of the liquid-vapor interface during saturated film boiling with a level set method [8].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the original pseudopotential LB approach usually suffers from the problem of thermodynamic inconsistency, i.e., the predicted liquid-vapor coexistence densities are inconsistent with the results given by the Maxwell construction [34]. We recently found that the thermodynamic 6 inconsistency can be eliminated through adjusting the mechanical stability condition via an improved forcing scheme [35,36]. Hence in this study we use the improved pseudopotential LB model [36] to simulate the fluid flow.…”

Section: Introductionmentioning

confidence: 99%

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Lattice Boltzmann modeling of boiling heat transfer: The boiling curve and the effects of wettability

Kang

François

et al. 2015

International Journal of Heat and Mass Transfer

336

184

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A hybrid thermal lattice Boltzmann (LB) model is presented to simulate thermal multiphase flows with phase change based on an improved pseudopotential LB approach [Q. Li, K. H. Luo, and X. J. Li, Phys. Rev. E 87, 053301 (2013)]. The present model does not suffer from the spurious term caused by the forcing-term effect, which was encountered in some previous thermal LB models for liquid-vapor phase change. Using the model, the liquid-vapor boiling process is simulated. The boiling curve together with the three boiling stages (nucleate boiling, transition boiling, and film boiling) is numerically reproduced in the LB community for the first time. The numerical results show that the basic features and the fundamental characteristics of boiling heat transfer are well captured, such as the severe fluctuation of transient heat flux in the transition boiling and the feature that the maximum heat transfer coefficient lies at a lower wall superheat than that of the maximum heat flux. Furthermore, the effects of the heating surface wettability on boiling heat transfer are investigated. It is found that an increase in contact angle promotes the onset of boiling but reduces the critical heat flux, and makes the boiling process enter into the film boiling regime at a lower wall superheat, which is consistent with the findings from experimental studies.

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“…It is therefore currently not possible to simulate boiling and two-phase flow directly. However, by making a number of appropriate approximations it is possible to undertake high fidelity simulation of boiling two-phase flow using the so called Direct Numerical Simulation (DNS) method [16][17] and the lattice Boltzmann (LB) method [18][19]. However, both methods are computationally excessive and applying them to boiling two-phase flow for real surfaces is currently impossible.…”

Section: Simulation and Modelling Of Boiling And Two Phase Flowmentioning

confidence: 99%

A review of evaporative cooling system concepts for engine thermal management in motor vehicles

Jafari

Dunne

Langari

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part D:

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The evaporative cooling system concepts proposed over the past century for engine thermal management in automotive applications are examined and critically reviewed. The purposes of this review are to establish the evident system shortcomings and to identify the remaining research questions that need to be addressed to enable this important technology to be adopted by vehicle manufacturers. Initially, the benefits of the evaporative cooling systems are restated in terms of the improved engine efficiency, the reduced carbon dioxide emissions and the improved fuel economy. This is followed by a historical coverage of the proposed concepts dating back to 1918. Possible evaporative cooling concepts are then classified into four distinct classes and critically reviewed. This culminates in an assessment of the available evidence to establish the reasons why no system has yet been approved for serial production commercially. Then, by systematic examination of the critical areas in evaporative cooling systems for application to automotive engine cooling, the remaining research challenges are identified

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Brief Review of Latest Direct Numerical Simulation on Pool and Film Boiling

Cited by 25 publications

References 86 publications

2D Simulation of boiling heat transfer on the wall with an improved hybrid lattice Boltzmann model

2D Simulation of boiling heat transfer on the wall with an improved hybrid lattice Boltzmann model

Lattice Boltzmann modeling of boiling heat transfer: The boiling curve and the effects of wettability

A review of evaporative cooling system concepts for engine thermal management in motor vehicles

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