TWO-DIMENSIONAL CIP-SOROBAN SOLVER TOWARD AN EFFICIENT WATER FLOW ANALYSIS IN A RESERVOIR
In recent years, at many water reservoirs, toward an extension of a lifetime and an improvement of a water quality, necessity of efficient managements and controls of water flow has been recognized. For the purposes, while a numerical analysis is considered to be one of powerful tools, there are still some problems to be overcome in order to utilize for actual daily managements; low time-consuming, low computational error, consideration of effects due to complex meteorological conditions and so on. In this work, we propose a new numerical model to overcome or alleviate these problems. In the proposed model, in order to reduce a computational effort a two-dimensional (2-D) k-ε turbulent equation averaged in the transverse direction is treated. The governing equation is solved with a low numerical diffusion error by using CIP-Soroban scheme that enable simple rearrangements and efficient concentrations of the computational grid points to improve a spatial resolution. Furthermore, in order to consider meteorological effects, the model is combined with a heat-balance and a wind stress models. The developed model is applied to the Shichigashuku Reservoir in Japan. Through a series of comparisons with observational results, it is verified that the proposed model is able to restore the water flow reasonably in reducing a computational cost efficiently.
CIP scheme Soroban grid system water reservoir density flow two-dimensional numerical model
Takashi Kojima Takashi Nakamura Tadaharu Ishikawa
Department of Environmental Science and Technology, Tokyo Institute of Technology,Nagatsuta 4259 G5-3, Midori-ku, Yokohama 226-8502, Japan
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
1800-1805
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）