金丝雀 发表于 2025-3-25 03:42:11
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Salt Intrusion in Estuaries,ation; however, this concentration varies in longitudinal direction. This is called the well-mixed case. The salt concentration is now governed by the convection-diffusion equation (11.4) with two complications:Agronomy 发表于 2025-3-25 13:47:34
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Numerical Solution for Box Model,ow or the waste discharge varies in an arbitrary way, this is no longer so. Moreover, in many applications of box models the equations will not be so nicely linear. In general, you will need numerical techniques and these can be illustrated very well for the water quality example.GULLY 发表于 2025-3-26 11:31:23
Transport of a Dissolved Substance,ected. This is not very realistic, but you will find more about that in later chapters. The consequence is that the substance is carried with the packet of water in which it was discharged, see Fig. 4.1. If the discharge takes a time ., the length of the packet is ., where . is the flow velocity. AfCalculus 发表于 2025-3-26 15:23:07
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