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Water Resources Utilization Engineering Lab
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The lab uses mathematical models of flow to develop ways to use and protect regional water wisely.
AboutAbout the lab
Interpreting regional water flows through mathematical models.
The lab studies how to decide on water use by paying attention to the regional water cycle and considering the impact of human activities.
Using mathematical models based on fluid dynamics, together with simulations that handle surface water, groundwater and heat in an integrated way, the lab aims to help solve real water problems in agriculture and rural areas.
Undergraduate students are assigned to the lab in their fourth year (graduate students belong to the Division of Environmental Science and Technology, Graduate School of Agriculture).
Key terms
- Shallow water equations
- Equations describing the motion of water in rivers and floods, where horizontal flow is dominant
- Irrigation network
- A system for distributing water, made up of connected irrigation ponds, irrigation canals, paddy fields and drainage channels
ResearchResearch themes
The lab studies how to decide on water use within the regional water cycle while taking the impact of human activities into account. Its main tools are mathematical models of fluid flow and simulations of regional water environments.
*Illustrative imageReproducing regional water environments with models
A regional water environment arises from the interplay of topography, geology, climate, irrigation and fertilization. Taking into account the irrigation networks of paddy field areas, the lab builds simulation models that reproduce groundwater movement and water quality.
*Illustrative imageMathematical models of water flow
The lab numerically solves mathematical models derived from the laws of fluid dynamics, such as the shallow water equations, and verifies them against exact solutions, experiments and observations. The results are applied to rural water problems such as flood mitigation and the management of migration routes for aquatic organisms.
MembersFaculty
- ProfessorMasayuki Fujihara
- Associate ProfessorKoichi Unami
- Associate ProfessorJunichiro Takeuchi
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Heiwa Irrigation 1910 B” 作者不詳 / Public domain (cropped)
- Reproducing regional water environments with models: “Narayanpur Right Bank Canal distributary 10 aerial irrigation network Karnataka India” Vraj Acharya, WELL Labs / CC BY-SA 4.0 (cropped)
- Mathematical models of water flow: “Climate simulation ( )” Oak Ridge National Laboratory / CC BY 2.0 (cropped)
- Related lab (Rural Planning Lab): “Kyoto Toin Koshihata Rice Fields 2013-09” At by At / CC BY-SA 3.0 (cropped)
- Related lab (Water Environment Engineering Lab): “Creek in wheat fields in Honjo, Saga” Peka / CC BY-SA 4.0 (cropped)
- Related lab (Agricultural Systems Engineering Lab): “Tractor cultivating a field in Brittany” PtiBzh / CC0 (cropped)
- Related lab (Field Robotics Lab): “John Deere Combine Harvester Ebing 1799” Ermell / CC BY-SA 4.0 (cropped)
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