Physics of twophase flow: Choked flow
Abstract
It is shown that the basic equations governing the flow of a two phase fluid, i.e., liquid and vapor, are natural extensions of those equations that describe single phase flow. The exact form of the equations depends on the particular assumptions used to characterize the two phase flow, i.e., the equations depend on the model chosen. In general the mathematical model is selected so as to retain as much of the physics of the phenomena as possible while at the same time permitting solutions to be obtained without undue complexity. The following quantities were computed for saturated water substance over the temperature range 100 to 2500 C and for saturated Refrigerant114 over the range 20 to +700 C: choking velocity, critical or choking flow density, and saturation properties. Tables of the results are given along with graphs of selected functions.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 May 1981
 Bibcode:
 1981STIN...8133439M
 Keywords:

 Continuity Equation;
 Mathematical Models;
 Two Phase Flow;
 Chokes (Restrictions);
 Differential Equations;
 Graphs (Charts);
 Tables (Data);
 Thermodynamic Properties;
 Fluid Mechanics and Heat Transfer