Two-phase flow modeling
Abstract
The two fluid model must be consistent with the balance laws written for each phase and the interfaces and can be written using either time-averages or space-averages. In the second case only transient flow problems with a single space variable can be dealt with. A list of hypotheses commonly accepted in order to simplify the equations is given. The different forms of the six equation system are recalled with particular emphasis on the difference equations introduced by Boure (1975). These equations display the dynamic and thermodynamic non-equilibrium that is the slip velocity and the differences between the enthalpies of each phase and the corresponding saturation enthalpies.
- Publication:
-
In Von Karman Inst. for Fluid Dyn. Two-Phase Flows in Nucl. Reactors
- Pub Date:
- 1978
- Bibcode:
- 1978tpfn....1V....D
- Keywords:
-
- Average;
- Difference Equations;
- Mathematical Models;
- Two Phase Flow;
- Enthalpy;
- Liquid-Vapor Interfaces;
- Slip Flow;
- Thermodynamic Equilibrium;
- Fluid Mechanics and Heat Transfer