Based on the tensor analysis of water-sediment two-phase how, the basic model equations for clear water flow and sediment-laden flow are deduced in the general curve coordinates for natural water variable-density turb...Based on the tensor analysis of water-sediment two-phase how, the basic model equations for clear water flow and sediment-laden flow are deduced in the general curve coordinates for natural water variable-density turbulent how. Furthermore, corresponding boundary conditions are also presented in connection with the composition and movement of non-uniform bed material. The theoretical results are applied to the calculation of the float open caisson in the construction period and good results are obtained.展开更多
Water quality model about heavy metal under general initial and boundary conditions was studied. The model includes adsorption of suspended sediment, adsorption of bed load, advective diffusion of flow water, which af...Water quality model about heavy metal under general initial and boundary conditions was studied. The model includes adsorption of suspended sediment, adsorption of bed load, advective diffusion of flow water, which affect the concentration of heavy metal in river water. Laplace transforms method was adopted, its integral equation of the concentration of diluting heavy metal and solid heavy metal was given. The characteristic of the model under constant solution was discussed. Using this model the prediction of mercury (Hg) ions concentration distribution along a section of Yellow River in Lanzhou, China was performed. The computational value is approximately equal to the measured value.展开更多
文摘Based on the tensor analysis of water-sediment two-phase how, the basic model equations for clear water flow and sediment-laden flow are deduced in the general curve coordinates for natural water variable-density turbulent how. Furthermore, corresponding boundary conditions are also presented in connection with the composition and movement of non-uniform bed material. The theoretical results are applied to the calculation of the float open caisson in the construction period and good results are obtained.
文摘Water quality model about heavy metal under general initial and boundary conditions was studied. The model includes adsorption of suspended sediment, adsorption of bed load, advective diffusion of flow water, which affect the concentration of heavy metal in river water. Laplace transforms method was adopted, its integral equation of the concentration of diluting heavy metal and solid heavy metal was given. The characteristic of the model under constant solution was discussed. Using this model the prediction of mercury (Hg) ions concentration distribution along a section of Yellow River in Lanzhou, China was performed. The computational value is approximately equal to the measured value.
