幅水深比の小さな一様弯曲水路における砂堆発生時の局所流に関する３次元数値計算

摘要

In this study, the 3-D numerical simulation of the flow in a 90° curved channel with small width-to-depth ratio when the dune developed at the outer side of the channel was performed. The FAVOR method was introduced into the governing equations, and the k-ε model predicted the turbulence. The QUICK scheme and the Adams-Bashforth method were used as the discretization scheme, and the HSMAC method on the collocated grid computed the anomaly pressure. The calculated results were compared with the experimental ones, and the cause of the scour region that appears in the inner side of the curved channel was mentioned from the calculated results.