[PDF] Top 20 Modelling and numerical simulation of metastable two-phase flows

... fast and accurate algorithm for water properties calculation proposed by the authors in ...recognize two different nonconservative terms in the phasic total energy ...gradient of the volume fraction, ... Voir le document complet

... interactions and transfers in reactor modeling CEA Cadarache, 13108 Saint Paul-lez-Durance Cedex, France Abstract This work takes place in steam generators flow studies and we consider here steady state ... Voir le document complet

... mailles Two-Point Flux Approximation (TPFA) qui est largement utilisé dans les simulateurs industriels est peu coûteux et robuste mais sa consistence exige des conditions fortes d’orthogonalité sur le maillage qui ... Voir le document complet

... in of c is a Heavyside function, then the function c in remains a solution of equation (18), but it is unstable ...D of x, the solution of (18) remains ...term and a thermo-diffusion ... Voir le document complet

... Many two-phase flow situations, from engineering science to astrophysics, deal with transition from dense (high concentration of the condensed phase) to dilute concentration (low concentration ... Voir le document complet

... in two-phase flows, showing the mathematical connection between these two ...6, and the example of the system closure in the case of laminar incompressible liquid-liquid ... Voir le document complet

... application of the proposed non-linear elastoplastic phase field model to solve some elementary initial boundary values problems in coupled diffusion- elastoplasticity, where the numerical results ... Voir le document complet

... term and its numerical treatment with the characteristic ...surface and goes to the other side of the computational domain, will be 0 ...physics of the system nor with the continuous ... Voir le document complet

... numbers of interesting and un- usual behaviours: They can flow as liquids, but, under some circumstances, they can jam and resist to external shear stress without ...rheology of granular ... Voir le document complet

... 27] and references therein for more details. Inspired by the theory of scalar conservation laws, an simple way to solve a triangular system of 2 × 2 equations is to compute the solution of the ... Voir le document complet

... element numerical model of debris flow is designed and validated by calibrating the parameters to find the desired flow corresponding to the Arequipa’s ...continuum/discrete simulation is done ... Voir le document complet

... First of all, the problem must be analyzed from the modelling point of ...properties of the flow that should hold at the crossing of the ...instance, of the continuity of ... Voir le document complet

... required. Two specific aspects of the small-scale are therefore studied in details; The first development deals with the inertial deviation from Darcy’s ...effect of inertia on Darcy’s law, depending ... Voir le document complet

... made of pure undersaturated ...made of dry oversaturated ...regions of fluid of different nature separated by two points of phase ...position of the phase ... Voir le document complet

... part of the ...transfer and pres- sure are unbalanced between phases. Two different systems will then be derived by considering the equilibria which correpond to instantaneous relaxations due to the ... Voir le document complet

... treatment of specific numerical problems which appear when phase appearance or disappearance occurs in models of two-phase ...paper, two outstanding problems are ... Voir le document complet

... ignition phase of a jet engine cycle is by definition a critical phase and is part of the certification of the jet engines which needs for security reasons to ignite or re-ignite ... Voir le document complet

... the numerical prediction of fluid-elastic instability has been ...resolution of the turbulence in order to predict correctly hydrodynamic forces at the wall and a robust coupling algorithm to ... Voir le document complet

... effect and a thermodynamical effect that accounts for mass ...model and its properties. We shall then describe two equilibrium submodels issued from the relaxations processes when instantaneous ... Voir le document complet

... for two phase flows simulation Katia Ait-Ameur, Yvon Maday and Marc Tajchman Abstract In this paper, we will report our recent effort to apply the parareal algo- rithm to the time ... Voir le document complet