Assessment of numerical schemes for complex two-phase flows with real equations of state - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Computers and Fluids Année : 2020

Assessment of numerical schemes for complex two-phase flows with real equations of state

Olivier Hurisse

Résumé

Some accidental scenarii studied in the framework of the nuclear safety analysis involve liquids undergoing strong pressure drops at high temperature. In order to perform realistic simulations of such situations, a code based on a model that can handle both the ther-modynamical disequilibrium between liquid and vapor and complex equations of state is required. We propose herein to test a homogeneous model built on the basis of the Euler system of equations and complemented by a mixture pressure law. The latter is defined in accordance with the Gibbs relation on the basis of the phasic pressures which are defined through a look-up table based on the IAPWS-97 formulation. A wide range of verification problems (Riemann problems) is then studied to assess the behavior of the numerical schemes for this complex equation of state. The tested relaxation scheme is the best compromise between accuracy and stability. At last, a simple test case of vaporization near a wall is investigated in order to test some return to thermodynamical-equilibrium timescale based on the nucleation theory.
Fichier principal
Vignette du fichier
verification_complex_EOS.pdf (3.27 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02315038 , version 1 (14-10-2019)
hal-02315038 , version 2 (17-06-2020)

Identifiants

Citer

Philippe Helluy, Olivier Hurisse, Lucie Quibel. Assessment of numerical schemes for complex two-phase flows with real equations of state. Computers and Fluids, 2020, 196 (104347), ⟨10.1016/j.compfluid.2019.104347⟩. ⟨hal-02315038v2⟩
229 Consultations
116 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More