Research

Current Research

​Flame synthesis offers the potential for high-volume continuous production at reduced costs and is widely used in industry. Nanoparticles commonly produced using flames by industry leaders of Cabot, Cristal Global, DuPont, and Evonik, covering carbon black, fumed SiO2, and TiO2. Typical production volume through flame synthesis by industry is on the order of 100 metric tons per day. A key advantage of using flames for material synthesis is that it readily provides high temperature necessary for gas phase reactions. Additionally, flames can naturally provide a carbonizing or oxidizing environment.​
​Flame quenching/re-ignition behavior, as one of the flame dynamic features, can be further elucidated from the high-speed OH-PLIF images shown in the upper Figure. A sequence of 4 consecutive images with 0.2 ms time interval is shown. The downstream part of RZ is quenched (red circle) with disappearing OH signal. 
​In practical combustion systems, understanding of autoignition phenomenon is important, for example, for knocking behavior in gasoline engines and ignition mechanism in diesel engines. Moreover, the stabilization of non-premixed lifted jet flames is an important issue which is related to safety and efficiency in practical combustors.