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Combustion Engineering Lab
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A lab that explores detonation, an ultrafast form of combustion, from fundamentals to applications.
AboutAbout the lab
Exploring detonation, an ultrafast combustion phenomenon.
The Combustion Engineering Lab studies the fundamentals and applications of detonation, a form of combustion that is extremely fast.
Combustion is a complex phenomenon in which thermal and fluid dynamic phenomena are coupled.
Besides applications such as aerospace propulsion systems, the lab also works on hydrogen combustion burners and on controlling and reducing combustion emissions that are harmful to the human body.
Key terms
- Detonation
- A form of combustion in which a shock wave and a chemical reaction are inseparably coupled and propagate at supersonic speed.
- Rotating detonation engine
- An engine that obtains thrust from detonation. It has a high operating frequency and allows a compact combustor.
- Disk-type rotating detonation engine
- A rotating detonation engine whose combustor can be made thin and whose pressure gain can be improved by narrowing the exit.
ResearchResearch themes
Combustion is a complex phenomenon in which thermal and fluid dynamic phenomena are coupled. Centered on detonation, a form of combustion that propagates at supersonic speed, the lab studies its fundamentals and its applications such as propulsion systems.
*Illustrative imageFundamentals of detonation
Detonation is a form of combustion in which a shock wave and a chemical reaction are inseparably coupled and propagate at supersonic speed. Because it would cause enormous damage if it occurred in the real world, the lab investigates the mechanisms of its initiation and the fundamental characteristics of its propagation.
*Illustrative imageDetonation engines
Thrust is obtained by expelling the high-temperature, high-pressure combustion gas produced by detonation. Applications include pulse detonation engines and rotating detonation engines (RDEs), and RDEs are being studied in many countries as next-generation aerospace engines.
*Illustrative imageDisk-type rotating detonation engines
This is an engine whose combustor can be made thin, and whose pressure gain can be improved by smoothing the flow path and narrowing the exit. The lab investigates how the propellant mass flow rate and the combustor shape affect performance.
*Illustrative imageLiquid sterilization by detonation
By converging detonation to create ultrahigh pressure and generating underwater shock waves in a liquid, the lab aims to sterilize microorganisms and other contaminants. The advantages include requiring no chemical agents and thus a low environmental impact, and being able to treat a wide range of liquids without heating.
MembersFaculty
The members of the Combustion Engineering Lab consist of faculty, technical staff, and doctoral, master's, and undergraduate students.
- ProfessorKazuhiro Ishii
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.
- Top image: “NASA RDE” NASA / Public domain (cropped)
- Fundamentals of detonation: “TNT detonation on Kaho'olawe Island during Operation Sailor Hat, shot Bravo, 1965” US Navy Employee / Public domain (cropped)
- Detonation engines: “Nasa--methalox-rocket-engine-test-fiiring” NASA / Public domain (cropped)
- Disk-type rotating detonation engines: “PDE-powered aircraft” U.S. Air Force photo / Public domain (cropped)
- Liquid sterilization by detonation: “Schlieren photograph of T-38 shock waves” Leonard Weinstein / NASA / Public domain (cropped)
- Related lab (応用固体力学研究室): “Friction-Driven Encoder Test (encoder 04-CC)” International Gemini Observatory/NOIRLab/NSF/AURA / CC BY 4.0 (cropped)
- Related lab (流体力学研究室): “Micrograph of magnetic microfluidic chip ( )” National Institute of Standards and Technology / Public domain (cropped)
- Related lab (流体生産システム研究室): “Shear Flow Vortices” KarlGaff / CC BY 4.0 (cropped)
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