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Ooka-Kikumoto Lab
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The lab uses computation and experiments to study wind, heat, and energy in cities and buildings.
AboutAbout the lab
Solving wind, heat, and energy in cities and buildings.
The Ooka-Kikumoto Lab studies the wind, thermal, and air environments of cities and buildings, as well as energy systems.
The lab works on systems that use renewable energy and on control methods that optimize how energy is used.
Using computational fluid dynamics (CFD), deep learning, and wind tunnel experiments, the lab investigates indoor airflow, cough droplets, urban wind, and air pollution.
The Ooka Lab and the Kikumoto Lab work together as a joint group at the Institute of Industrial Science on the Komaba Campus.
Key terms
- CFD
- Computational fluid dynamics. A method that uses computers to calculate, reproduce, and predict the flow of air or water.
- Wind tunnel experiment
- An experiment in which artificial wind is generated in a tunnel-like device to examine the flow of wind around a model of a building.
- Model predictive control
- A control method that predicts future states using a mathematical model and determines the optimal action accordingly.
NewsLab news
A student received the Young Researcher Excellent Presentation Award at the Architectural Institute of Japan Annual Meeting
Assistant Professor Lin received the Research Encouragement Award from the Japan Association for Wind Engineering
An alumnus received the Best Paper Award at the ASHRAE Annual Conference
A master's student received the Outstanding Master's Thesis Award from the Japan Association for Wind Engineering
Students received the Excellent Paper Encouragement Award at the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan (SHASE) Annual Meeting
ResearchResearch themes
The lab studies the thermal, air, and wind environments of cities and buildings, and the energy systems that support them. Its work covers the use of renewable energy, optimization of energy systems, analysis of the thermal and air environment, and modeling of wind and the environment.
*Illustrative imageUse of Renewable Energy
As a project of NEDO (New Energy and Industrial Technology Development Organization), the lab conducts research and development on systems that use heat from renewable energy.
*Illustrative imageOptimization of Energy Systems
The lab studies demand response based on model predictive control, and simulations of HVAC control using EnergyPlus, a software program that calculates building energy use.
*Illustrative imageThermal and Air Environment of Cities and Buildings
The lab investigates topics such as deep-learning-based evaluation of solar energy use in houses, prediction of indoor airflow, the movement of droplets from coughs, indoor pollen, and the relationship between urban form and the wet bulb globe temperature (WBGT).
*Illustrative imageWind and Environment of Cities and Buildings
The lab studies topics such as predicting how particles disperse in street spaces in urban areas, methods for estimating the distribution of urban wind from sensor measurements, urban microclimates, and fluidic diodes that promote natural ventilation.
MembersFaculty
The members of the Ooka-Kikumoto Lab consist of faculty, technical staff, researchers, joint researchers from industry and other organizations, doctoral and master's students, and research students.As of 2026
- ProfessorRyozo OokaPublications ↗
- Associate ProfessorHideki KikumotoPublications ↗
- Assistant ProfessorChao LinPublications ↗
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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: “Komaba Research Campus (Evening) color” Guwashi / CC BY 2.0 (cropped)
- Use of Renewable Energy: “Solar heating system - Thermosolaranlage - Mörfelden-Walldorf - Germany” Norbert Nagel / CC BY-SA 3.0 (cropped)
- Optimization of Energy Systems: “Duck Curve CA-ISO .agr” ArnoldReinhold / CC BY-SA 4.0 (cropped)
- Thermal and Air Environment of Cities and Buildings: “Running Through Paris Heat (153178 - vir 20240806 lrg)” NASA Earth Observatory images by Wanmei Liang and Michala Garrison, using VIIRS Land Surface Temperature data, marathon route from Github, and Landsat data from the U.S. Geological Survey. Story by Adam Voiland. / Public domain (cropped)
- Wind and Environment of Cities and Buildings: “Wind Tunnel Model of One Post Office Square, Boston, by Frank Durgin, model built by Earl Wassmouth, 1979, view 1 - MIT Museum - DSC03694” Daderot / CC0 (cropped)
- Related lab (Mae Lab): “Private House with Solar Roof panels. - geograph.org.uk - 627270” Colm O hAonghusa / CC BY-SA 2.0 (cropped)
- Related lab (Akashi Lab): “Tokyo Station Marunouchi Building P5228787” Kestrel / CC BY-SA 4.0 (cropped)
- Related lab (Sakuma Lab (Environmental Acoustics Lab)): “Anechoic chamber DTU” Arnaud Dessein / CC BY-SA 3.0 (cropped)
- Related lab (Iwafune Lab): “Electric transmission power tower2” Foto3821 / CC0 (cropped)
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