A Linear Domain Decomposition Method for Non-equilibrium Two-Phase Flow Models

2020 ◽  
pp. 145-153
Author(s):  
Stephan Benjamin Lunowa ◽  
Iuliu Sorin Pop ◽  
Barry Koren
Keyword(s):  
Domain Decomposition ◽  
Decomposition Method ◽  
Two Phase Flow ◽  
Domain Decomposition Method ◽  
Phase Flow ◽  
Two Phase ◽  
Flow Models ◽  
Non Equilibrium

Steam-generator simulation with non-equilibrium two-phase flow models

1986 ◽  
Vol 13 (11) ◽  
pp. 617-621
Author(s):  
P. Munshi ◽  
K.S. Ram ◽  
M.S. Kalra ◽  
D.V. Rao
Keyword(s):  
Steam Generator ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Flow Models ◽  
Non Equilibrium

scholarly journals A hierarchy of non-equilibrium two-phase flow models

2019 ◽  
Vol 66 ◽  
pp. 109-143 ◽  
Author(s):  
Gaute Linga ◽  
Tore Flåtten
Keyword(s):  
Chemical Potential ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Source Terms ◽  
Equilibrium System ◽  
Two Phase ◽  
Flow Models ◽  
Two Phases ◽  
Analytical Expressions ◽  
Non Equilibrium

We review and extend a hierarchy of relaxation models for two-phase flow. The models are derived from the non-equilibrium Baer–Nunziato model, which is endowed with relaxation source terms to drive it towards equilibrium. The source terms cause transfer of volume, heat, mass and momentum due to differences between the phases in pressure, temperature, chemical potential and velocity, respectively. In the context of two-phase flow models, the subcharacteristic condition implies that the sound speed of an equilibrium system can never exceed that of the relaxation system. Here, previous work by Flåtten and Lund [Math. Models Methods Appl. Sci., 21 (12), 2011, 2379–2407] and Lund [SIAM J. Appl. Math. 72, 2012, 1713–1741] is extended to encompass two-fluid models, i.e. models with separately governed velocities for the two phases. Each remaining model in the hierarchy is derived, and analytical expressions for the sound speeds are presented. Given only physically fundamental assumptions, the subcharacteristic condition is shown to be satisfied in the entire hierarchy, either in a weak or in a strong sense.

scholarly journals Port-Hamiltonian formulation of two-phase flow models

2021 ◽  
Vol 149 ◽  
pp. 104881
Author(s):  
H. Bansal ◽  
P. Schulze ◽  
M.H. Abbasi ◽  
H. Zwart ◽  
L. Iapichino ◽  
...  
Keyword(s):  
Two Phase Flow ◽  
Hamiltonian Formulation ◽  
Phase Flow ◽  
Two Phase ◽  
Flow Models
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