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The Numerical Simulation of the Non-equilibrium Transportation of Suspended Sediment and the Erosion Prediction of Rivers

Author: WangHongMei
Tutor: HanQiWei；GaoXuePing
School: Tianjin University
Course: Hydraulics and River Dynamics
Keywords: Suspended sediment Equilibrium sediment transport Mathematical model Natural river Sedimentation forecast
CLC: TV142.3
Type: Master's thesis
Year: 2010
Downloads: 130
Quote: 1
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Abstract


One -dimensional mathematical model of sediment in flood control, navigation , natural river sand and other engineering fields and reservoirs has been widely used . Based on the systematic analysis of one-dimensional unsteady flow and sediment mathematical model based on the current situation , combined with the actual application of natural river erosion and deposition prediction goal , the establishment of a one-dimensional suspended sediment equilibrium sediment transport model . In Qingtongxia ~ Shizuishan reach objects for the application , the use of mathematical models for erosion and deposition validated and the river in July 2010 - June 2016 made ??a prediction of erosion and deposition . Finally, on the basis of predicted erosion and deposition , erosion and deposition under different flow of the river 's water level changes along the rear were calculated. Paper is divided into six chapters, each chapter of the main contents are as follows : Chapter 1 is the introduction of suspended sediment research status , the main numerical methods were systematically elaborated on this basis, combined with the practical application of the proposed article main tasks. Chapter 2 established the equilibrium sediment transport of suspended sediment mathematical model, and some processing methods for systematic exposition . Chapter 3, using the method of generalized river suspended sediment grain size and bed size adjustment calculation. A series of calculated results show that the proposed mathematical model can simulate suspended sediment and bed sediment particle size adjustment rules can reflect changes in sediment grading process . Chapter 4 Application of the model , including the three areas, first, the application of the mathematical model for Qingtongxia ~ Shizuishan river silting verification ; secondly , the river in July 2010 - June 2016 within the process of erosion and deposition prediction ; Finally, according to the results predicted erosion and deposition , calculated under different flow along the river 's water level after sedimentation . Chapter 5 is the conclusion and outlook . This paper summarizes the work on future work and prospects .

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CLC: > Industrial Technology > Hydraulic Engineering > The basic science of water resources project > Sediment dynamics, River Dynamics > Sediment movement > Suspended solids movement
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