Turbulent Combustion
Strong interactions of flow motions with chemical reaction can be typically realized by turbulent flames. For example, when the turbulent intensity becomes very high, reaction cannot follow the motion of the fluid and local extinction often occurs. We are exploring especially the fine structure of turbulent flames in a high pressure environment using laser optical methods such as laser tomography and LIF. The study will be of great use for the reduction of toxic components in exhaust combustion gas as well as for the improvement in performances of various combustors.
0.1 MPa　　　　 0.25 MPa　　　　 0.5 MPa　　　　 　1.0 MPa
High-pressure Turbulent Premixed Flames
OH-PLIF Images of methane-air turbulent premixed flames at 1.0 MPa. Feasibility of the LIF method for turbulent combustion in a high-pressure environment has been investigated. This method was applied to the turbulent premixed flames stabilizes in a high-pressure chamber up to 2.0 MPa. The fine structure of the flame front can be clearly seen from the OH images.
LIF Measurement of Turbulent Premixed Flames at High-pressure