INVESTIGATION OF LIQUID-VAPOR INTERACTIONS IN A CONSTANT AREA CONDENSING EJECTOR.
MASSACHUSETTS INST OF TECH CAMBRIDGE RESEARCH LAB OF ELECTRONICS
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A detailed investigation of the liquid-vapor interactions occurring within a constant area steam-water condensing ejector is described. Axial static and radial impact pressure profiles were obtained. These data which correspond to a limited range of inlet vapor conditions and a wide range of inlet liquid velocities reveal the presence of three flow regimes based on inlet liquid velocity. Complete condensation caused by a condensation shock is shown to occur only within the High Inlet Liquid Velocity Regime. Evidence is given of the occurrence and importance of liquid jet breakup. It is shown that the presence of supersonic vapor flow is a necessary but not sufficient condition for the existence of the condensation shock. Two one-dimensional mixing section analyses are described. Digital computer solutions of the analyses are presented which show the effects of interfacial heat transfer and friction on the flow variables. It is shown that the coefficient of heat transfer from the interface to the liquid jet is of the order of 100 BTUsq. ft. sec degree F. This compares favorably with the results of other studies on the heat transfer rates to turbulent water jets with condensation. Author
- Pumps, Filters, Pipes, Tubing, Fittings and Valves
- Fluid Mechanics