The Authors presented a fascinating research work on the air demand in spillways. The investigation was based on the air demand observations along the spillway tunnel of the Jinping-I dam, in China. Prototypal and 3D numerical model data of the total air demand, Qair, along the spillway tunnel, and of the air discharge along three air ducts installed on the tunnel ceiling were evaluated. These data were then compared with the estimations by a 1D model, as suggested by the Authors, and by some empirical equations from the technical literature. The Authors showed that the 1D model, calibrated by modifying the interfacial shear stress coefficient, gave the more accurate prediction of Qair.
Discussion of Air demand prediction and air duct design optimization method for spillway tunnel By JIJIAN LIAN, XIAOQUN WANG and DONGMING LIU
Crispino G.
;Gisonni C.
2023
Abstract
The Authors presented a fascinating research work on the air demand in spillways. The investigation was based on the air demand observations along the spillway tunnel of the Jinping-I dam, in China. Prototypal and 3D numerical model data of the total air demand, Qair, along the spillway tunnel, and of the air discharge along three air ducts installed on the tunnel ceiling were evaluated. These data were then compared with the estimations by a 1D model, as suggested by the Authors, and by some empirical equations from the technical literature. The Authors showed that the 1D model, calibrated by modifying the interfacial shear stress coefficient, gave the more accurate prediction of Qair.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
