Research

Target of our research

Safety Engineering 

・Understanding disaster phenomenon scientifically

・Structuring a high-reliability security system

Combustion Theory

・Basic combustion phenomenon

・Thermal hydrodynamics

Research topics

Gas Explosions

大規模ガス爆発 Assessment of confined and unconfined gas explosion  is conducted. When propagating flame is accelerated due to the instability, pressure rise rate is increased in case of confined gas explosion, and blast wave is enhanced in case of unconfined gas explosion. As a result, acceleration of propagating flame is crucial  for accurate estimation of gas explosion's risk. Experiments from laboratory scale to large scale are conducted in order to  analyze the flame propagation phenomena and develope the  assessment model of gas explosion.

 

 

 Dust explosion

粉じん爆発の火炎構造 As a high risk industrial disaster, dust explosion is a complex phenomenon that flame propagates in the heterogeneous medium, where particles undergo heating, vaporization/pyrolysis, mixing with oxidizer, ignition, burning, and flame extinction.  We aim to reveal flame propagating mechanism and evaluate the risk of submicron particle (0.1 – 1 µm).

 

 

Fire Whirl 

火災旋風実験 Fire whirl is the phenomenon that behavior of fire changes by interaction between a flame and a swirl. It has been observed in large scale forest fire and in the Great Kanto Earthquake. Fire whirl causes increases of not only flame height also fuel consumption rate and fire spread rate, which contributes to expansion of fire damage. The mechanism and the influence of fire whirl are examined.

東京大学
東京大学大学院工学系研究科
化学システム工学専攻