2020 Environmental Hydraulics

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Academic unit or major
Graduate major in Global Engineering for Development, Environment and Society
Nakamura Takashi 
Course component(s)
Lecture    (ZOOM)
Day/Period(Room No.)
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Offered quarter
Syllabus updated
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Course description and aims

The fundamental theories of water flow and the impact of flow on the water environment are taught. First, based on fluid mechanics, the mathematical expression of environmental water flow is lectured. Then, modeling of the water flow in actual rivers and lakes is taught. Finally, some distinctive flows observed in the actual environment are introduced and their theoretical backgrounds are discussed.
Generally, water flow takes a dominant role in the spatial transportation of various substances in actual water environments such as rivers and lakes. This class aims to provide a foundation to understand the various phenomena occurring in the water environment.

Student learning outcomes

I. Understand the fundamental equations used to describe water flow.
II. Acquire the basic knowledge about the modeling of water flow in actual rivers and lakes.
III. Learn the impacts of water flow and its transportation on the water environments.


Water flows, River and Lake, Density stratification, Density current, Turbulence, Modeling

Competencies that will be developed

Specialist skills Intercultural skills Communication skills Critical thinking skills Practical and/or problem-solving skills

Class flow

Please confirm class schedule with OCW web.

Course schedule/Required learning

  Course schedule Required learning
Class 1 Basic equations of water flow - derivation from the laws of conservation Derive the fundamental equation from the laws of conservation.
Class 2 Basic equations of water flow - Physical interpretation Learn the physical process represented by the conservation equations
Class 3 Fundamental features of environmental water flow Learn the fundamental features of water flow by applying the basic equations
Class 4 Modeling of environmental flow Learn how to model the water flows in actual water environments
Class 5 Density driven phenomena - density stratification Learn the impact of spatial changes in water density; especially phenomena of density stratification is discussed.
Class 6 Density driven phenomena - density stratification-2 Learn the impact of spatial changes in water density; especially phenomena of density stratification is discussed.
Class 7 Density driven phenomena - density current Learn the impact of spatial changes in water density; especially density current phenomena are discussed.

Out-of-Class Study Time (Preparation and Review)

To enhance effective learning, students are encouraged to spend approximately 100 minutes preparing for class and another 100 minutes reviewing class content afterwards (including assignments) for each class.
They should do so by referring to textbooks and other course material.



Reference books, course materials, etc.


Assessment criteria and methods

Based on a report submitted in the end of class, understanding of "basic theory of water flows", "modeling of water environment", and "impact of water flow on the environmental problem" are evaluated.

Related courses

  • TSE.A205 : Fluid Engineering

Prerequisites (i.e., required knowledge, skills, courses, etc.)


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