授業科目名 河川環境工学特論
英語授業科目名 River Environmental Engineering
科目ナンバリング
講義番号 D50180 担当教員[ローマ字表記] 田中 規夫 [Tanaka,Norio]
科目区分 理工学研究科博士後期課程理工学 開講学部 理工学研究科博士後期課程
単位数 2 必修・指定選択・選択の別
開講学期(期別) 第1・2 曜日時限 月3
教室 理工研-各研究室 対象年次
初年次教育科目

クラス指定

Doctors

他との関連(関連項目)

Hydraulics I, Hydaraulics II

履修条件(授業に必要な既修得科目または前提知識)

*

テーマ・副題

*

授業科目の到達目標

1)To understand the differential equations of molecular diffusion, turbulent diffusion, dispersion equation, the equation of continuity,
the Navier - Stokes equation, Reynolds equation and Reynolds Stress
2)To understand how to determine the water surface in different hydraulic condition and to calculate the water surface profile in
unsteady open channel flow
3)To understand the sediment transport mechanisms
4)To understand how to solve nonlinear long wave equations

授業キーワード

turbulence, flow model, unsteady flow, sediment transport

授業の内容

*

授業の方法・事前準備学修・事後展開学修

Lectures

授業展開(スケジュール)

Lecture 1-8 Tanaka (with Master course), Lecture 8- Tanaka (for Phd course)

Lecture 1-2 Fundamental equations (1) Report 1 : 10%
1)Lagrange differentiation, 2)Euler’s equation of motion, 3)Continuity equation,
4)Depth-averaged continuity equation

Lecture 3-4 Fundamental equations (2) Report 2 : 20%
1)Navier-Stokes equation, 2)Reynolds decomposition, The Reynolds equation

Lecture 5-6 Fundamental equations (3) Report 3 : 20%
1)Modeling of the Reynolds stress, 2)Depth-averaged momentum equation, 3)Diffusivity term

Lecture 7 Sediment transport and sediment properties
1)Fall velocity of sediment particles, 2)Inception of sediment motion, occurrence of bed-load motion, 3)Inception of suspended load motion, 4)bed-load transport, 5)Suspended-load transport

Lecture 8-9 Numerical simulation: 1D Steady flow in open channels
1) Numerical simulation of non uniform flow (calculation of water surface in river)

Lecture 10-11 Numerical simulation: nonlinear long wave equations (1)
1) explicit method, 2)non reflective wave generation boundary

Lecture 12-14 Numerical simulation: nonlinear long wave equations (2)
1) Finite difference method, 2) Staggered grid scheme, 3)Leap flog method, 4) Boundary condition,

Lecture 15 Numerical simulation: Boussinesq equation

Final Report 50 %

Report 100 %

From Lecture 2, the note is distributed to students by e-mail.
Every student should do printing out and bring in each class.

成績評価方法

Reports 100 %

成績評価基準

上記の成績評価方法による得点をもとに、80点以上を優、70点以上を良、60点以上を可、60点未満を不可とし、可以上を合格とする。

テキスト

*

参考図書

*Reference
1)Tennekes & Lumley, A first course in turbulence, MIT press, 1972.
2)Schlichting, H., Boundary-layer theory, McGraw-Hill, 1979.
3)+ Chanson, H., The hydraulics of open channel flow, Butterworth Heinemann, 1999.
4)Chien & Wan, Mechanics of sediment transport, ASCE press

学生へのメッセージ

*

その他・備考

*