Design of a High Intensity Turbulent Combustion System
University of Texas at El Paso El Paso United States
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The work is focused on the design and development of a high intensity turbulent combustion system which can be operated at compressible 0.3 M 0.5, preheated T0500K and premixed conditions in order to investigate the Thickened Flame regime. An air-methane mixture has been used as the fuel for this study. An optically accessible backward-facing step stabilized combustor has been designed for a maximum operating pressure of 6 bar. A grid has been introduced with different blockage ratios BR 54, 61 and 67 in order to generate turbulence inside the combustor for the experiment. Optical access is provided via quartz windows on three sides of the combustion chamber. Finite Element Analysis FEA is done in order to verify the structural integrity of the combustor at rated conditions. In order to increase the inlet temperature of the air, a heating section was designed to use commercially available in-line heaters. Separate cooling subsystems have been designed for chamber cooling and exhaust cooling. The LabVIEW software interface has been selected as the control mechanism for the experimental setup. A 10 kHz Time Resolved Particle Image Velocimetry TR-PIV system and a 3 kHz Planer Laser Induced Fluorescence PLIF system have been integrated with the system in order to diagnose the flow field and the flame respectively.
- Fluid Mechanics
- Combustion and Ignition
- Test Facilities, Equipment and Methods