Analytical solution of velocity distribution for flow through submerged large deflection flexible vegetation

摘要: An analytical solution for predicting the vertical distribution of streamwise mean velocity in an open channel flow with submerged flexible vegetation is proposed when large bending occurs. The regime separated into two horizontal layers: a layer and free water layer. In layer, mechanical analysis conducted, approximately linear relationship between drag force observed case deflection, which differes significantly from rigid upright vegetation. Based on theoretical analysis, force-mean expression momentum equation derived, obtained. For new presented, replacing traditional logarithmic distribution, to obtain zero gradient at surface. Finally, predictions are compared published experimental data, good agreement demonstrates that this model effective through deflection