Twophase 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 timeaverages or spaceaverages. 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 nonequilibrium 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. TwoPhase Flows in Nucl. Reactors
 Pub Date:
 1978
 Bibcode:
 1978tpfn....1V....D
 Keywords:

 Average;
 Difference Equations;
 Mathematical Models;
 Two Phase Flow;
 Enthalpy;
 LiquidVapor Interfaces;
 Slip Flow;
 Thermodynamic Equilibrium;
 Fluid Mechanics and Heat Transfer