A sharp-interface phase change model for a mass-conservative interface tracking method

Sato, Yohei; Ničeno, Bojan

doi:10.1016/j.jcp.2013.04.035

Cited by 189 publications

(100 citation statements)

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“…Some others have also formulated a sharp phase change scheme for a different interface capturing method. In [15], Sato et al …”

Section: Literature Review On the Numerical Studies Of Multiphase Flomentioning

confidence: 99%

“…For pool boiling, the nucleate boiling regime has been studied by many such as in [15,93,94,95,96] where the implementation of contact angle model and micro-region model beneath the bubble [93] have been the major challenges. The nucleate boiling simulation has also been considered in conjunction with the conjugate heat transfer in the heated wall as well as the effect of wall surface conditions such as micro-groove structures.…”

Section: Future Workmentioning

confidence: 99%

“…The work in [15] employed a multiphase model based on volume fraction with interface sharpening scheme and derived a phase change model based on local interface area and mass flux.…”

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confidence: 99%

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Direct numerical simulation of incompressible multiphase flow with phase change

Lee

Riaz

Aute

2017

Journal of Computational Physics

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Phase change problems arise in many practical applications such as air-conditioning and refrigeration, thermal energy storage systems and thermal management of electronic devices.The physical phenomenon in such applications are complex and are often difficult to be studied in detail with the help of only experimental techniques. The efforts to improve computational techniques for analyzing two-phase flow problems with phase change are therefore gaining momentum.The development of numerical methods for multiphase flow has been motivated generally by the need to account more accurately for (a) large topological changes such as phase breakup and merging, (b) sharp representation of the interface and its discontinuous properties and (c) accurate and mass conserving motion of the interface. In addition to these considerations, numerical simulation of multiphase flow with phase change introduces additional challenges related to discontinuities in the velocity and the temperature fields. Moreover, the velocity field is no longer divergence free. For phase change problems, the focus of developmental efforts has thus been on numerically attaining a proper conservation of energy across the interface in addition to the accurate treatment of fluxes of mass and momentum conservation as well as the associated interface advection.Among the initial efforts related to the simulation of bubble growth in film boiling applications the work in [1] was based on the interface tracking method using a moving unstructured mesh. That study considered moderate interfacial deformations. A similar problem was subsequently studied using moving, boundary fitted grids Among the front capturing methods, sharp interface methods have been found to be particularly effective both for implementing sharp jumps and for resolving the interfacial velocity field. However, sharp velocity jumps render the solution susceptible to erroneous oscillations in pressure and also lead to spurious interface velocities. To implement phase change, the work in [16] employed point mass source terms derived from a physical basis for the evaporating mass flux. To avoid numerical instability, the authors smeared the mass source by solving a pseudo time-step diffusion equation. This measure however led to mass conservation issues due to non-symmetric integration over the distributed mass source region. The problem of spurious pressure oscillations related to point mass sources was also investigated by [17]. Although their method is based on the VOF, the large pressure peaks associated with sharp mass source was observed to be similar to that for the interface tracking method.Such spurious fluctuation in pressure are essentially undesirable because the effect is globally transmitted in incompressible flow. Hence, the pressure field formation due to phase change need to be implemented with greater accuracy than is reported in current literature.The accuracy of interface advection in the presence of interfacial mass flux (mass flux conservation) has been discussed in [14,18]. ...

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“…Some others have also formulated a sharp phase change scheme for a different interface capturing method. In [15], Sato et al …”

Section: Literature Review On the Numerical Studies Of Multiphase Flomentioning

confidence: 99%

Section: Future Workmentioning

confidence: 99%

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Direct numerical simulation of incompressible multiphase flow with phase change

Lee

Riaz

Aute

2017

Journal of Computational Physics

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“…05.083 to move the interface by taking into account the boiling velocity and to impose the jump condition on the velocity field. Many works [7,12,21,26,32,48,51,52,58,61] have been dedicated to the development and the implementation of specific numerical methods to perform accurate simulations including all these features. In particular, in [58] some benchmarks have been proposed to assess the relevance of several numerical methods by comparing numerical and theoretical predictions.…”

Section: Introductionmentioning

confidence: 99%

Direct numerical simulation of nucleate pool boiling at large microscopic contact angle and moderate Jakob number

Huber

Tanguy

Sagan

et al. 2017

International Journal of Heat and Mass Transfer

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao.univ-toulouse.fr/ Eprints ID : 17968 a b s t r a c tIn this paper, we present Direct Numerical Simulations of Nucleate Boiling on a single site in configurations involving both a large microscopic contact angle, a moderate Jakob number (less than 50) and a high density ratio between the two phases. A detailed study on the validation of the numerical simulations is presented. Several issues about the numerical modelling of the contact line are addressed in order to define a global strategy to perform accurate and predictive simulations. Benchmarks from pioneering studies (Son et al., 1999) have been reproduced with more recent numerical methods and thinner grids in order to define the most relevant strategy for successful simulations. In particular, the grid sensitivity of the solution is thoroughly investigated by performing simulations with four successive grids. The numerical results are compared favorably with experimental data, since the discrepancy between the numerical solutions and the experimental data is always less than 10% whether the departure diameter or the departure frequency are considered. The influence on the numerical solution of the thermal conduction in the solid heater is also assessed and we report that this parameter has no influence in the configurations of thick and highly conductive materials that have been considered in this study. We also present clarifications about the requirement of a specific modelling in the contact line region in order to account for a possible impact of the micro-region. Finally, based on the results of this analysis of our numerical simulations, we formulate the following unusual conclusion: the implementation of a micro-region model and an additional coupling between the overall solver and such a model is not required to perform well-resolved and accurate numerical simulations in the case of high density ratio, high microscopic contact angle (up to 30°) and moderate Jakob number. Next, we present some comparisons on the bubble shape evolution between the numerical simulations and a static force balance model, in order to investigate the mechanisms leading to the bubble detachment. Finally, we conclude this paper by presenting a parametric study, by varying the Jakob number, in order to propose a new correlation on the bubble detachment radius depending on the latter dimensionless number.

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“…A new cut-cell approach is described in this section and implemented in the in-house code PSI-BOIL [32]. In this work, we assume incompressibility of fluid and constant physical properties.…”

Section: Methodsmentioning

confidence: 99%

A Three-Dimensional, Immersed Boundary, Finite Volume Method for the Simulation of Incompressible Heat Transfer Flows around Complex Geometries

Badreddine¹,

Sato²,

Berger³

et al. 2017

International Journal of Chemical Engineering

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The current work focuses on the development and application of a new finite volume immersed boundary method (IBM) to simulate three-dimensional fluid flows and heat transfer around complex geometries. First, the discretization of the governing equations based on the second-order finite volume method on Cartesian, structured, staggered grid is outlined, followed by the description of modifications which have to be applied to the discretized system once a body is immersed into the grid. To validate the new approach, the heat conduction equation with a source term is solved inside a cavity with an immersed body. The approach is then tested for a natural convection flow in a square cavity with and without circular cylinder for different Rayleigh numbers. The results computed with the present approach compare very well with the benchmark solutions. As a next step in the validation procedure, the method is tested for Direct Numerical Simulation (DNS) of a turbulent flow around a surface-mounted matrix of cubes. The results computed with the present method compare very well with Laser Doppler Anemometry (LDA) measurements of the same case, showing that the method can be used for scale-resolving simulations of turbulence as well.

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A sharp-interface phase change model for a mass-conservative interface tracking method

Cited by 189 publications

References 50 publications

Direct numerical simulation of incompressible multiphase flow with phase change

Direct numerical simulation of incompressible multiphase flow with phase change

Direct numerical simulation of nucleate pool boiling at large microscopic contact angle and moderate Jakob number

A Three-Dimensional, Immersed Boundary, Finite Volume Method for the Simulation of Incompressible Heat Transfer Flows around Complex Geometries

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