Interphase transport in horizontal stratified cocurrent flow. [PWR; BWR]
Technical Report
·
OSTI ID:5458626
The problem of interfacial transport in cocurrent, horizontal stratified gas-liquid systems is considered. Local condensation heat transfer coefficients and interface shear stress were obtained from mass and force balances. These balances were based on gas phase pitot traverses at various streamwise locations. Laser anemometer measurements of liquid mean and rms fluctuation velocities were made at similar locations. The laser anemometer data supported the value for the interface shear velocity obtained by the gas phase force balance. Based on cocurrent stratified air-water flow data the noncondensing interface shear stress was found to be a function of the relative velocity between the phases and the liquid fraction. Incorporated into Linehan's relation for condensing flow shear stress, the correlation was found to estimate the shear velocity for the condensation data considered. Local condensation heat transfer coefficients and gas absorption mass transfer coefficients were found to be directly proportional to the shear velocity.
- Research Organization:
- Northwestern Univ., Evanston, IL (USA). Dept. of Mechanical and Nuclear Engineering
- OSTI ID:
- 5458626
- Report Number(s):
- NUREG/CR-2334; ON: DE82903831
- Country of Publication:
- United States
- Language:
- English
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