Large Scale Low Pressure Dump Combustor Performance.
Final rept. May-Dec 75,
AIR FORCE AERO PROPULSION LAB WRIGHT-PATTERSON AFB OHIO
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An experimental investigation has been conducted extending previous results of small scale dump combustors to larger combustors 8 to 12-in D tested at lower pressures. A parametric study was then conducted around the 12-in baseline configuration, with and without flameholders, in which combustor length-to-diameter LD, Combustor Length-to-step height Lh, characteristic length L, fuel injector type, inlet temperature and chamber pressure were varied. Lean blowout limit, combustion efficiency, and combustor pressure drop were obtained from these runs using JP-4 fuel and compared to previous small scale data. A limited number of additional tests were conducted with Shelldyne-H fuel. Results show that good combustion efficiencies can be achieved with relatively low blockage flameholders resulting in higher overall performance for the larger combustors. Author
- Jet and Gas Turbine Engines