Abstract
A new 3D numerical flow model named as TITech-WARM is developed. The model is specialized to calculate the water flow in water reservoirs. To restore spatial structure of water temperature precisely, the model is developed based on the CIP-Soroban method. While the CIP scheme is employed as an advection solver to avoid numerical diffusion error, a new adoptive mesh system 'Soroban mesh' is adopted. To estimate a time development of water temperature, heat exchanges between water surface and atmosphere are modeled with the Swinbank and Rohwer equations. Furthermore, to take account of aeration processes utilized in many reservoirs, the model is combined with a vertical 1D double plume model. The developed model is applied to the Kamafusa water reservoir. Through comparisons with field observational data of water temperature and flow, it has been found that the model has the capability to restore the flow structure well.
