Author(s): Yasuo Nihei; Yuichi Kato; Keita Sato
Linked Author(s):
Keywords: River flow; Three-dimensional numerical method; Mode-splitting technique; Flood flow
Abstract: A three-dimensional (3D) numerical method for large-scale river flow with a new mode-splitting technique and parallel computation is developed. To remove the severe limitation of the computational time interval required for the 3D calculation in previous mode-splitting techniques, we present a new mode-splitting technique with high numerical stability and reduced computational time. The present model is applied to a flood flow computation of the Edo River, Japan. Good agreement is obtained between the model simulation and field measurements. More importantly, the computational time of the present model is only 0. 4% of that of a normal 3D model without the modesplitting and parallel processing techniques.
Year: 2007