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The Two-Phase Critical Flow of One-Component Mixtures in Nozzles, Orifices, and Short Tubes
510
Citations
0
References
1971
Year
Interphase HeatEngineeringOne-component MixturesSingle-phase FlowFluid MechanicsMechanical EngineeringLiquid-liquid FlowCritical FlowGas-liquid FlowTwo-phase FlowCompressible FlowMaterials ScienceFlow PhysicDisperse FlowSupercritical FlowMultiphase FlowHeat TransferTwo-phase Critical FlowMultiphase ProcessingExperimental ResultsShort Tubes
The study investigates critical flow of one‑component, two‑phase mixtures through convergent nozzles, considering interphase heat, mass, and momentum transfer. Using experimental data and credible assumptions, the authors derive a transcendental expression for the critical pressure ratio and extend the two‑phase model to include orifices and short tubes. The derived expression predicts critical flow rates, and the models agree with experimental data for steam‑water, cryogenic, and alkali‑metal mixtures.
The critical flow of one-component, two-phase mixtures through convergent nozzles is investigated and discussed including considerations of the interphase heat, mass, and momentum transfer rates. Based on the experimental results of previous investigators, credible assumptions are made to approximate these interphase processes which lead to a transcendental expression for the critical pressure ratio as a function of the stagnation pressure and quality. A solution to this expression also yields a prediction for the critical flow rate. Based on the experimental results of single-phase compressible flow through orifices and short tubes, the two-phase model is extended to include such geometries. The models are compared with steam-water, cryogenic, and alkali-metal experimental data.