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Misumi Lab
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The lab studies flow and mixing inside stirred tanks through measurement and computation.
AboutAbout the lab
Capturing phenomena inside stirred tanks through measurement and computation.
The Misumi Lab studies mixing (agitation and blending) technology, which is important in a wide range of fields including the chemical and food industries.
The lab captures flow-driven phenomena in stirred tanks and reaction vessels using newly developed measurement techniques, and builds analysis methods such as numerical simulation based on the resulting data.
The lab is also working to apply the knowledge gained about mixing to new engineering settings such as biotechnology and supercritical processes.
The lab accepts inquiries, including online meetings, from third-year students in the Chemical Applications EP (Educational Program) who wish to join the lab, and from students at other universities who wish to enter graduate school.
Key terms
- Stirred tank
- A vessel in which liquids, powders, and other materials are mixed with an impeller. It is widely used in chemical processes.
- Crystallization
- An operation that extracts crystals from a solution. The way the solution is stirred affects how the crystals form.
- Electrical resistance tomography
- A measurement system that observes and displays, without contact, the dispersion state of different phases at any cross-section of a tank.
NewsLab news
Associate Professor Misumi received the Yokohama National University Best Teacher Award for fiscal year 2025 (Reiwa 7)
A paper on CFD prediction of the neutralization reaction rate in a stirred tank has been accepted for publication in Results in Engineering
A master's student received the Student Excellence Award at the 77th Annual Meeting of the Society of Sea Water Science, Japan
A paper on the turbulent mixing mechanism of a neutralization reaction in a semi-batch stirred tank has been accepted by Chemical Engineering Science
ResearchResearch themes
Mixing technology affects productivity and whether high-performance new materials can be made in a wide range of fields, including the chemical, food, and biotechnology industries. In this lab, flow-driven phenomena in stirred tanks are captured with newly developed measurement techniques, and the resulting data are used to build reproducible, high-accuracy analysis methods.
*Illustrative imageDispersion of particles and droplets in stirred tanks
The lab has independently developed measurement methods that can observe particle size distribution, concentration, and other properties in real time, even in stirred tanks densely filled with bubbles, droplets, and solid particles. Recently, the lab has focused on the crystallization process in stirred tanks and the dispersion state in suspension polymerization tanks.
*Illustrative imageDevelopment of new measurement technologies
To investigate flow and temperature distribution inside reaction vessels, the lab is developing a system that acquires and processes image data in real time, as well as an electrical resistance tomography system. The latter has succeeded in continuously measuring the dispersion state of monomer droplets in a suspension polymerization reactor.
*Illustrative imageDevelopment of numerical simulation methods
To investigate the details of flow, mixing, reaction, and heat transfer in stirred tanks, the lab runs calculations on EWS-class computers and is developing numerical simulation methods usable in industry while validating them against experiments.
*Illustrative imageHydrogen production by alkaline water electrolysis
Aiming at hydrogen production from renewable energy, the lab studies how oxygen bubbles form at the anode and hydrogen bubbles form at the cathode in alkaline water electrolysis, as well as mass transfer models of the anode reaction.
MembersFaculty
The members of the Misumi Lab consist of faculty and students in the doctoral program, the master's program, and the undergraduate program.
- Associate ProfessorRyuta Misumi
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: “Artistic Crystallization, Side View” Paolo Infante / CC BY-SA 4.0 (cropped)
- Dispersion of particles and droplets in stirred tanks: “X-ray test of friction-stir welded tank ESA373005” European Space Agency / CC BY-SA 3.0 igo (cropped)
- Development of new measurement technologies: “Hukseflux GG01 Gardon Gauge heat flux sensor” Pieter Werken / CC BY-SA 4.0 (cropped)
- Development of numerical simulation methods: “F1 CFD Simulation” Cofaser / CC BY-SA 4.0 (cropped)
- Hydrogen production by alkaline water electrolysis: “Hydrogen production via Electrolysis” Parent55 / CC0 (cropped)
- Related lab (Kumasaki Lab): “Pueblo Chemical Agent-Destruction Pilot Plant Explosion Containment Room ( )” PEO ACWA / CC BY 2.0 (cropped)
- Related lab (Regenerative Medicine (Junji Fukuda) Lab): “YPD petri dishes” Ns takes photos / CC BY 4.0 (cropped)
- Related lab (Photophysical Chemistry Lab): “Singlet oxygen Glow” Nekitmm / CC BY-SA 4.0 (cropped)
- Related lab (Biophysical Chemistry and Structural Life Chemistry Lab): “Rhodopsin” AtikaAtikawa / CC BY-SA 4.0 (cropped)
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