科目名 Course Title Sediment Transport [土砂輸送特論E] 講義題目 ...

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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



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

Number of Credits

2

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 vie
wpoints
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
riv
ers, 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 r
elated 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, part
icle 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 d
iagram

(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 suspende
d 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, rip
ples, 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

H a n d o u t s p r e p a r e d b y t h e i n s t r u c t o r

講 義 指 定 図 書

R e a d i n g L i s t

F l u i d

D y n a m i c s

J.W. D a i l y, a n d D. R. H a r l e m a n

A d d i s o n
-
W e s l e y

1 9 6 6

L o o s e B o u n d a r y H y d r a u l i c s

J. R a u d k i v i

P e r g a m o n

1 9 9 0

参 照 ホ ー ム ペ ー ジ

W e b s i t e s

h t t p://e a r t h
-
f e.e n g.h o k u d a i.a c.j p/l e c t u r e/S e d i m e n t T r a n s p o r t.h t m l

研 究 室 の ホ ー ム ペ ー ジ

W e b s i t e o f L a b o r a t o r y

h t t p://e a r t h
-
f e.e n g.h o k u d a i.a c.j p/

備考

Additional Information

PARE
発展科目
(This is a PARE Core Cluster Subject)