Hydrodynamics of annular-dispersed flow
The interfacial drag, droplet entrainment, and droplet size distributions are important for detailed mechanistic modeling of annular dispersed two-phase flow. In view of this, recently developed correlations for these parameters are presented and discussed. The drag correlations for multiple fluid particle systems have been developed from a similarity hypothesis based on the mixture viscosity model. The results show that the drag coefficient depends on the particle Reynolds number and droplet concentration. The onset of droplet entrainment significantly alters the mechanisms of mass, momentum, and energy transfer between the film and gas core flow as well as the transfer between the two-phase mixture and the wall. By assuming the roll wave entrainment mechanism, the correlations for the amount of entrained droplet as well as for the droplet size distribution have been obtained from a simple model in collaboration with a large number of data. The comparison of the correlations with various data show satisfactory agreement. 31 refs.
- Research Organization:
- Argonne Natl Lab, IL, USA
- OSTI ID:
- 6307694
- Report Number(s):
- CONF-820601-
- Journal Information:
- Am. Soc. Mech. Eng., Pressure Vessels Piping Div., (Tech. Rep.) PVP; (United States), Vol. 64; Conference: ASME pressure vessel and piping conference, Orlando, FL, USA, 27 Jun 1982
- Country of Publication:
- United States
- Language:
- English
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