Combustion characteristics of a model can-type combustor

✍ Scribed by A.F. Bicen; D.G.N. Tse; J.H. Whitelaw

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 966 KB
• Volume: 80
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(90)90120-g

✦ Synopsis

Combustion characteristics of a model can-type combustor are reported for inlet temperatures of 315 and 523 K at an air-fuel ratio corresponding to that of takeoff conditions, with gaseous fuel and at near-atmospheric pressure. Temperatures were obtained with fine-wire thermocouples, and concentrations of UHC, H2, CO, CO2, and O2 sampled through a water-cooled probe with a flame ionization detector, a gas chromatograph, and infrared and paramagnetic analyzers. The results indicated combustion efficiencies of approximately 98% with 45% of the mass flow of the primary jets turned upstream after impingment and combustion in the wakes of the swirler and of the primary jets. The exit-temperature distribution had a maximum value of 1600 K and a pattern factor of 0.46, and the higher inlet air temperature led to flatter scalar profiles and a pattern factor of 0.29. Equilibrium assumptions yielded up to seven times the measured concentrations of CO and H2 in the fuel-rich regions and heat release properties within 10% and 5% in the stoichiometric and in the fuel-lean regions, respectively.