Water inlet numerical modeling of mixed free-surface pressurized flow in diversion tunnel
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Abstract:
Based on flood routing result and construction investment estimation of Xueshan Reservoir, the facture surface size of the diversion tunnel and the front water of diversion dam were proposed. The diversion tunnel presented a kind of flow which was the first mixed free-surface pressurized flow at maximum flood lever of 2449.99m. The diversion tunnel inducer of different water inlet styles was modeled by the CFD numerical software FLUENT. By analyzing the dynamic pressure and flow velocity in the case of this water flow along the diversion tunnel, the results indicated that the bell-mouth inlet could better improve the flow condition and reduce the negative impact of mixed free-surface pressurized flow.
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