掃流砂の非平衡性を考慮したデューンの線形安定解析(移動床の流体力学,一般講演) [in Japanese] Linear stability analysis of dunes incorporated with non-equilibrium bedload transport [in Japanese]
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Dunes formed in lower flow regimes disappear and antidunes appear when the discharge becomes larger than a certain amount during floods. It is important to elucidate the bed instability for the prediction of flow resistance of river channels. Colombini (2004) have performed linear stability analysis of fluvial dunes by the use of the mixing length turbulent model. In this study, we performed a linear stability analysis with the use of a sediment transport formula incorporating the influence of nonequilibrium bedload movement.
日本流体力学会年会講演論文集 2007, 141, 2007