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Trong chương trước, rất nhiều các quá trình vận chuyển trầm tích cơ bản và quan trọng nhất đã được thảo luận. Trong chương này, những ý tưởng này được áp dụng cho các mô hình vận chuyển trầm tích. Trong phần 6.1, một tổng quan ngắn gọn nhưng nói chung các mô hình vận chuyển trầm tích được đưa ra. Trong mục 6.2 vận tải như tải bị đình chỉ và / hoặc bedload được thảo luận với mục đích mô tả một phương pháp tiếp cận thống nhất cho mô hình xói mòn. Ứng dụng đơn giản của. | 6 Modeling Sediment Transport In previous chapters many of the basic and most significant sediment transport processes were discussed. In the present chapter these ideas are applied to the modeling of sediment transport. In Section 6.1 a brief but general overview of sediment transport models is given. In Section 6.2 transport as suspended load and or bedload is discussed with the purpose of describing a unified approach for modeling erosion. Simple applications of sediment transport models are then described in Section 6.3. More complex applications of sediment transport models to rivers lakes and estuaries are presented in Sections 6.4 through 6.6 the purpose is to illustrate some of the significant and interesting characteristics of sediment transport in different types of surface water systems as well as to illustrate the capabilities and limitations of different models. 6.1 OVERVIEW OF MODELS Numerous models of sediment transport exist. They differ in 1 the number of space and time dimensions used to describe the transport and 2 how they describe and quantify various processes and quantities that are thought to be significant in affecting transport. Some of the processes and quantities that may be significant include 1 erosion rates 2 particle floc size distributions i.e. the number of sediment size classes 3 settling speeds 4 deposition rates 5 flocculation of particles 6 bed consolidation 7 erosion into suspended load and or bedload and 8 bed armoring. In practice most sediment transport models do not include accurate descriptions of all of these processes. The final choice of space and time dimensions what processes to include in a model and how to approximate the processes that are included is a compromise between the significance of each process an understanding of and ability to quantify each process the desired accuracy of the solution the data available for process description for specification of boundary and initial conditions and for verification .
