Interfacial area transport of adiabatic air-water bubbly flow in vertical round tubes
Conference
·
OSTI ID:20002508
In relation to the development of the interfacial area transport equation, the sink and source terms in an adiabatic bubbly flow system were modeled based on the mechanisms of bubble-bubble and bubble-turbulent eddy random collisions, respectively. The interfacial area transport mechanism was discussed based on the derived model. One dimensional interfacial area transport equation with the derived sink and source terms was evaluated by using the area averaged flow parameters of adiabatic air-water bubbly flows measured in 25.4 mm and 50.8 mm diameter tubes. The flow conditions of the data set covered most of the bubbly flow regime, including finely dispersed bubbly flow (inlet superficial gas velocity: 0.0414{approximately}3.90 m/s, superficial liquid velocity: 0.262{approximately}5.00 m/s, void fraction: 1.27{approximately}46.8%). Excellent agreement was obtained between predicted and measured interfacial area concentrations within the average relative deviation of 6.72%. It was concluded that the present model would be valid for most of the bubbly flow regime.
- Research Organization:
- Kyoto Univ., Kumatori, Osaka (JP)
- OSTI ID:
- 20002508
- Report Number(s):
- CONF-990805--
- Country of Publication:
- United States
- Language:
- English
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