Equilibrium two-phase heat pipe flows with variable flowrate
Abstract
The problem of steady pipe flow of vapor in thermodynamic equilibrium with liquid droplets is analyzed as a part of a study of possible operating modes in a heat pipe. The analysis accounts for phase transitions within the flow core, with phase properties (e.g., velocity and temperature) averaged over the channel cross section. It is assumed that the supplied (or removed) heat is expended completely on phase transitions at the channel walls and that the mean phase velocities are equal, i.e., there is no slip. A set of equations are obtained which allow the calculation of flow parameters in any channel section.
- Publication:
-
NASA STI/Recon Technical Report A
- Pub Date:
- December 1980
- Bibcode:
- 1980STIA...8221975V
- Keywords:
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- Equilibrium Flow;
- Flow Velocity;
- Heat Pipes;
- Pipe Flow;
- Two Phase Flow;
- Heat Transmission;
- Phase Transformations;
- Fluid Mechanics and Heat Transfer