摘要
A 3-D temperature model for diversion tunnel was developed by combining k-εmodel and energy transport e-quation. The actual geometry data of the tunnel was used to construct athree-dimensional computational domain including the concrete lining. As the interaction betweentemperature and velocity fields can be taken into account, the model can be employed to accuratelysimulate the temperature and velocity field. The model was validated with the field data observed inthe diversion tunnel of the Nanya River. The water temperature of the diversion tunnel of theSecond Jinping Cascade Hy-dropower Station to be built was predicted. It is shown that thetemperature increase is not observable due to the large diameter of the tunnel, the big flow rateand the short contact time, The result can provide scientific foundation or reference for the designof hydropower station, and protection strategy of aquatic organisms and aquatic ecosystem.
A 3-D temperature model for diversion tunnel was developed by combining k-εmodel and energy transport e-quation. The actual geometry data of the tunnel was used to construct athree-dimensional computational domain including the concrete lining. As the interaction betweentemperature and velocity fields can be taken into account, the model can be employed to accuratelysimulate the temperature and velocity field. The model was validated with the field data observed inthe diversion tunnel of the Nanya River. The water temperature of the diversion tunnel of theSecond Jinping Cascade Hy-dropower Station to be built was predicted. It is shown that thetemperature increase is not observable due to the large diameter of the tunnel, the big flow rateand the short contact time, The result can provide scientific foundation or reference for the designof hydropower station, and protection strategy of aquatic organisms and aquatic ecosystem.
基金
ProjectsupportedbytheNationalNaturalScienceFoundationofChina(GrantNo:50279025).
