Towards the direct numerical simulation of nucleate boiling flows

Martelot, Sébastien Le; Saurel, Richard; Nkonga, Boniface

doi:10.1016/j.ijmultiphaseflow.2014.06.010

Cited by 80 publications

(79 citation statements)

References 27 publications

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“…However, capillary effects may be of importance when the filaments start separating from the jet, and our future work will include them, following the approach presented in Le Martelot et al (2014) [15].…”

Section: Computational Time Efficiency and Simplicitymentioning

confidence: 99%

A simple and fast phase transition relaxation solver for compressible multicomponent two-phase flows

2017

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To cite this version:Alexandre Chiapolino, Pierre Boivin, Richard Saurel. A simple and fast phase transition relaxation solver for compressible multicomponent two-phase flows. Computers and Fluids, Elsevier, 2017, 150, pp.31 -45. <10.1016/j.compfluid.2017 AbstractThe present paper aims at building a fast and accurate phase transition solver dedicated to unsteady multiphase flow computations. In a previous contribution (Chiapolino et al. 2017), such a solver was successfully developed to compute thermodynamic equilibrium between a liquid phase and its corresponding vapor phase. The present work extends the solver's range of application by considering a multicomponent gas phase instead of pure vapor, a necessary improvement in most practical applications. The solver proves easy to implement compared to common iterative procedures, and allows systematic CPU savings over 50%, at no cost in terms of accuracy. It is validated against solutions based on an accurate but expensive iterative solver.Its capability to deal with cavitating, evaporating and condensing two-phase flows is highlighted on severe test problems both 1D and 2D.

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Section: Computational Time Efficiency and Simplicitymentioning

confidence: 99%

A simple and fast phase transition relaxation solver for compressible multicomponent two-phase flows

2017

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“…The thermodynamic closure presented in [21] or its improved formulation [22] is very convenient, as the previous relations (7) are fully explicit for the mixture [13,14]. The mixture temperature reads…”

Section: Flow Modelmentioning

confidence: 99%

“…With the thermodynamic closure (2), System (1) is hyperbolic with wave speeds u, u C c, and u c. The sound speed for this system is given in Le Martelot et al (2014) [14],…”

Section: Flow Modelmentioning

confidence: 99%

“…Flashing and condensing flows, as they are high-speed flows and subject to stiff thermodynamic relaxation. Interfacial flows, as the same equations deal with the direct numerical simulation of boiling flows at sub-bubble scale (Le Martelot et al (2014) [14], Saurel et al (2016) [13]). Therefore, the equilibrium solver addressed in the present work is a key point of the seven-equation, five-equation, four-equation, and three-equation hyperbolic two-phase flow models as it computes local thermodynamic equilibrium, this feature being important in many situations.…”

Section: Introductionmentioning

confidence: 99%

“…However, capillary effects may be of importance when the filaments start separating from the jet, and our future work will include them, following the strategy presented in Le Martelot et al (2014) [14]. which is present in many applications.…”

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confidence: 99%

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A simple phase transition relaxation solver for liquid–vapor flows

Chiapolino

Boivin

Saurel

2016

Numerical Methods in Fluids

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International audienceDetermining liquid-vapor phase equilibrium is often required in multiphase flow computations. Existing equilibrium solvers are either accurate but computationally expensive, or cheap but inaccurate. The present paper aims at building a fast and accurate specific phase equilibrium solver, specifically devoted to unsteady multiphase flow computations. Moreover, the solver is efficient at phase diagram bounds, where non-equilibrium pure liquid and pure gas are present. It is systematically validated against solutions based on an accurate (but expensive) solver. Its capability to deal with cavitating, evaporating and condensing two-phase flows is highlighted on severe test problems both 1D and 2D

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