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科目名 Course Title
Sediment Transport [土砂輸送特論 E]
講義題目 Subtitle
責任教員
Instructor
泉 典洋 [Norihiro IZUMI] (大学院工学研究院)
担当教員 Other
Instructors
開講年度 Year
2013
時間割番号 Course Number (E3)
092196 (31002)
開講学期 Semester
２学期
単位数
2
Number of Credits
補足事項 Other Information
キーワード Key Words
fluid mechanics, morphodynamics, open channel flow, sediment transport, river morphology
授業の目標 Course Objectives
Morphology and configuration of river channels are determined by the sediment movement due to flow, but the flow itself is in
turn strongly affected by the channel configuration. The river morphology is self-organized by the interaction between the
flow and the channel configuration. It is important to predict river morphology formed under given conditions from viewpoints
of flood protection, sustainable development of water resources, and advanced and integrated land use planning. One of the
objectives of this lecture is to obtain advanced knowledge on fluid mechanics, sediment transport, and morphodynamics in
rivers, needed to solve a variety of river engineering problems.
到達目標 Course Goals
To understand the concepts of mechanics underlying sediment transport processes and morphological evolution of river beds
To obtain the ability to evaluate sediment transport in rivers, and predict the morphological change of river beds
To acquire the ability to solve sediment transport problems and morphological problems caused by sediment transport
To understand linear and nonlinear stability analyses applicable to problems related to sediment transport and river
morphology
授業計画 Course Schedule
(1) Introduction
(2) Sediment Properties rock types, specific gravity, size, size distribution, porosity, shape
(3) Review of Fluid Mechanics 1 Navier-Stokes equations, Reynolds decomposition
(4) Review of Fluid Mechanics 2 bed shear stress, relations for channel resistance, St. Venant shallow water equations
(5) Equations of Particle Motion particle moving through quiescent fluid, terminal fall velocity in quiescent fluid, particle in a
moving fluid, collision with the bed, diffusion of turbulence
(6) Macroscopic View of Sediment Transport bedload, suspended load, Exner equation
(7) Threshold Condition for Sediment Motion Critical stress for flow over a granular bed, Shields diagram
(8) Mechanics of Bedload Transport 1 Bagnold hypothesis of bedload transport
(9) Mechanics of Bedload Transport 2 Ashida-Michiue formula, smorgasbord of bedload transport relations
(10) Suspended Sediment Transport 1 mass conservation of suspended sediment, Rousean distribution of suspended sediment
(11) Suspended Sediment Transport 2 vertically-averaged concentration, relation for sediment entrainment
(12) Descriptive Analysis of Bedforms introduction of bedform mechanics, dunes, antidunes, ripples, bars
(13) Stability Analysis of Bedforms 1 one-dimensional St. Venant model of bedform stability, modified St. Venant stability
model
(14) Stability Analysis of Bedforms 2 shear flow model
準備学習（予習・復習）等の内容と分量 Homework
Five to six assignments during a term
成績評価の基準と方法 Grading System
60 %: assignments (5-6 assignments during a term), 40 %: final exam (or final project)
テキスト・教科書 Textbooks
Sedimentation Engineering／Marcelo H. Garcia／ASCE
Handouts prepared by the instructor
講義指定図書 Reading List
Fluid Dynamics／J.W. Daily, and D. R. Harleman：Addison-Wesley，1966
Loose Boundary Hydraulics／J. Raudkivi：Pergamon，1990
参照ホームページ Websites http://earth-fe.eng.hokudai.ac.jp/lecture/SedimentTransport.html
研究室のホームページ Website of Laboratory
http://earth-fe.eng.hokudai.ac.jp/
備考 Additional Information
PARE 発展科目(This is a PARE Core Cluster Subject)