Abstract
Strategies of improving the vapor-liquid cross flow models will be discussed. Mainly based on the high-resolution air-water database obtained by Sadatomi & Kawahara, general trends of vapor-liquid cross flow processes will be examined. It can be appropriately assumed that hydraulic-equilibrium void distributions will be dominated by the three major effects: i.e. the fluid dynamic, the geometry and the narrow gap. The equilibrium void distribution model was modified to include the above-mentioned three effects. Two types of improved equilibrium void distribution models were proposed. Three characteristic parameters were assigned for each of the three effects and they were identified experimentally as functions of the void ratio. Multi-dimensional lattice geometries were incorporated based on the two-dimensional flow network model. The network equation was constructed by mapping the equilibrium void balance problem into the force-deflection problem. The new models were implemented into The Lahey's void settling model and they were verified based on equilibrium void distribution data obtained by Sadatomi & Kawahara.
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