Validated charts have been developed for the critical flow of Freon-11 in long tubes. The charts are based on a phenomenological model for the adiabatic one-component, two-phase flow of fluids in circular tubes with length to diameter ratios greater than eight. The model emphasizes the flow regimes that are present by using the appropriate void-fraction and vapor quality models and allows the prediction of critical mass flux and pressure from the stagnation conditions, entrance configuration, fluid properties and the length to diameter ratio of the pipe. The results from this study and an additional experimental study for data in tubes of length to diameter ratios less than 8 are mapped on the charts for the critical flow of Freon-11.
|Original language||English (US)|
|Number of pages||6|
|Journal||American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD|
|State||Published - 1984|
ASJC Scopus subject areas
- Mechanical Engineering
- Fluid Flow and Transfer Processes