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Tsukahara Lab
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A thermo-fluid dynamics lab that uses large-scale computers to unravel turbulence and heat flow.
AboutAbout the lab
Toward understanding, predicting, and controlling turbulence and thermo-fluid transport.
The Tsukahara Lab aims to understand, predict, and control turbulence and thermo-fluid transport phenomena.
Using simulations on large-scale computers, it investigates how the flow of water and air becomes turbulent, as well as the flow of elastic liquids.
The lab's trade name is "Thermo-Fluid Dynamics Lab."
Undergraduates who have not yet been assigned to a lab for their graduation research are welcome to visit and consult the lab at any time.
Key terms
- Turbulence
- Complex, chaotic flow commonly seen in the motion of air, water, and other fluids.
- Direct numerical simulation
- A computational method that solves the governing equations of flow exactly in three dimensions without turbulence modeling. Commonly called DNS.
- Viscoelastic fluid
- A fluid with elastic properties, such as a dilute aqueous solution of a polymer or surfactant.
NewsLab news
A doctoral student received the Excellence Presentation Award at the results report meeting of the Global Training Program.
A paper on the effect of surface roughness wavelength on laminar–turbulent transition was published in the international journal IJHFF.
A master's student received the Best Award at the 43rd Turbulence Control Research Meeting.
A master's student received the Excellence Award at the 42nd Turbulence Control Research Meeting.
A master's student received the Student Presentation Award at APCOM-ACCM 2025.
ResearchResearch themes
The Tsukahara Lab investigates thermo-fluid transport phenomena such as turbulence and the way heat is carried, using simulations on large-scale computers (supercomputers) and other methods, aiming to reveal their essence. Building on fluid dynamics and heat transfer engineering, it combines numerical, experimental, and theoretical analysis, and also experiments with machine learning and deep learning.
*Illustrative imageHow Turbulence Arises
Using direct numerical simulation, the lab analyzes the process by which smooth, non-turbulent flow turns into turbulence and the reverse process, to investigate the mechanisms of turbulence generation. It is also conducting joint research with JAXA on the boundary layer of swept wings.
*Illustrative imageTurbulence Reduction in Viscoelastic Fluids
The lab studies the phenomenon in which turbulent frictional drag drops substantially in viscoelastic fluids such as dilute aqueous solutions of polymers or surfactants. It studies turbulence in complex channels involving separation and reattachment through numerical analysis.
*Illustrative imageBlood Flow Analysis in Coronary Arteries
The lab analyzes blood flow in coronary arteries with stents using large-scale computer simulations. It aims to produce analyses that can guide stent treatment.
MembersFaculty
The Tsukahara Lab's members consist of faculty, doctoral and master's students, and undergraduates doing their graduation research.As of 2026
- ProfessorTakahiro Tsukahara
- Assistant ProfessorRyo Araki
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: “Heat-transmittance-means2” Kmecfiunit, cmglee / CC BY-SA 4.0 (cropped)
- How Turbulence Arises: “False color image of the far field of a submerged turbulent jet” C. Fukushima and J. Westerweel, Technical University of Delft / CC BY 3.0 (cropped)
- Turbulence Reduction in Viscoelastic Fluids: “Design, fabrication, and testing of a polymer expanded heat exchanger for absorption chilling” Zion Alioto, Joshua M. Pearce, Baxter Kamana-Williams, David C. Denkenberger / CC BY 4.0 (cropped)
- Blood Flow Analysis in Coronary Arteries: “Coronary Artery Bypass Surgery” BruceBlaus / CC BY-SA 4.0 (cropped)
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- Related lab (上野研究室): “Bubbles inside boiling water” Snehit Jamere / CC BY-SA 4.0 (cropped)
- Related lab (
青野研究室): “ZALA 421-12” QwasERqwasER at English Wikipedia / CC BY-SA 3.0 (cropped) - Related lab (田口研究室): “X43a2 nasa scramjet” NASA / Public domain (cropped)
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