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The 3D standard k - ?? model coupled with the volume of fluid (VOF) method of water-air two-phase flow is established in long-distance diversion tunnel with free flow. The method of wall functions which considers the roughness of the walls is utilized near the walls, and the method of pressure-implicit with splitting of operators (PISO) is applied to solve the unsteady water-air two-phase flow field...
The 3D standard k-epsiv model of water-air two-phase flow coupled with volume of fluid (VOF) method is established in long-distance diversion tunnel with free flow. Considering the wall roughness, the method of wall functions is adopted near the walls. The results show that the disturbance zone of water flow appears at the inlet. The mutation zone of water flow and air flow vortex appear at the outlet...
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