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Energy Thermofluids Engineering Lab
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A lab that uncovers how turbulence works so that energy can be used without waste.
AboutAbout the lab
Uncovering the universal laws of turbulence and applying them to energy.
The Energy Thermofluids Engineering Lab studies heat and flow technologies for using energy efficiently and safely.
The flow around Shinkansen trains and aircraft, the air blowing out of an air conditioner, and tap water running through a pipe are all turbulent flows.
The lab investigates how turbulence works through wind tunnel experiments, flow visualization and measurement methods, and numerical experiments on supercomputers.
The lab also studies heat and flow in a variety of fluids, including liquid metals and viscoelastic fluids.
Key terms
- Turbulence
- A flow in which the speed and direction of the fluid keep changing irregularly and violently
- Particle image velocimetry (PIV)
- A method that photographs fine particles mixed into a flow with a camera and measures the speed and direction of the flow from the motion of the particles
- Superfluidity
- A state, seen in liquid helium at extremely low temperatures, in which the liquid loses its viscosity and flows without friction
- Porous material
- A material with many fine holes and gaps inside it
NewsLab news
Associate Professor Nishikawara and colleagues' paper published in Case Studies in Thermal Engineering
Associate Professor Nishikawara and colleagues' paper published in Journal of Fluids Engineering
Development of thermal control technology that withstands the extreme heat and cold of the space environment (press release)
Associate Professor Nishikawara and colleagues' paper published in Journal of Fluid Science and Technology
Associate Professor Nishikawara and colleagues' paper published in Applied Thermal Engineering
ResearchResearch themes
The lab aims to uncover the universal laws of fluid turbulence and apply them to energy systems. Using wind tunnel experiments, measurement based on flow visualization, and numerical experiments on supercomputers, the lab links insights into turbulence to the development of energy-saving technologies and improvements in safety.
*Illustrative imageTurbulence structure and drag reduction technology
In pipe flow, the lab uses particle image velocimetry and electrochemical measurement at the same time to investigate the relationship between the force on the wall and the flow. It has shown that fluctuations in which the force on the wall reverses direction arise from very large turbulent structures. The lab aims to develop technologies that reduce drag.
*Illustrative imageObserving superfluid helium flow
When heat is applied to liquid helium in its superfluid state, opposing flows (thermal counterflow) form inside it and carry the heat. Using visualization and particle tracking, the lab has experimentally shown that this flow is non-uniform near the walls of the channel.
*Illustrative imageHeat transport in porous materials
The lab studies the phenomenon of gas and liquid flowing together in a mixed state inside porous materials. Using simulation, X-ray CT, and visualization of heat and flow, it examines the relationship between the fine structure of a porous material and how heat is transported, and explores design methods for thermally optimal structures.
*Illustrative imageMoving fluids with electric force
The lab studies electrohydrodynamic (EHD) phenomena, in which applying a high voltage to an insulating liquid generates flow. It is considering applications to thermofluid equipment, such as pumps with no mechanically moving parts, flow rate control, and enhancement of heat transfer.
MembersFaculty
The members of the Energy Thermofluids Engineering Lab are faculty members and students in the doctoral, master's, and undergraduate programs.As of 2024
- ProfessorYoshiyuki Tsuji
- Associate ProfessorMasahito Nishikawara
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: “False color image of the far field of a submerged turbulent jet” C. Fukushima and J. Westerweel, Technical University of Delft, The Netherlands / CC BY 3.0 (cropped)
- Turbulence structure and drag reduction technology: “F-16XL Scamp Flow Visualization Test - GPN” NASA / Public domain (cropped)
- Observing superfluid helium flow: “Cryostat filled with liquid helium on an optical bench” Alkamid / CC BY-SA 3.0 (cropped)
- Heat transport in porous materials: “Shell and Tube Heat Exchanger of Chiller” Saud / CC BY-SA 4.0 (cropped)
- Moving fluids with electric force: “Side view of homemade 12" Quadruple Bonetti Electrostatic Generator (Sector-less Wimshurst Machine)” Moses Nachman Newman / CC BY 4.0 (cropped)
- Related lab (Energy Quantum Materials Science Lab): “Transmission Electron Microscope” Juraj Kubica from Bratislava, Slovakia / CC BY-SA 2.0 (cropped)
- Related lab (Applied Isotope Science Lab): “Nuclear Fusion Reactor ( )” Steve Jurvetson from Los Altos, USA / CC BY 2.0 (cropped)
- Related lab (Energy Functional Materials Engineering Lab): “Thin film growth defect” Evavilova / CC BY-SA 4.0 (cropped)
- Related lab (Energy Nanomaterials Science Lab): “Metal-Organic Framework ( )” National Institute of Standards and Technology / Public domain (cropped)
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