ABSTRACT

Pulse combustion is a specic form of combustion-driven oscillation. Combustion oscillations can be an inherent problem or a potential benet in enclosed combustion systems, such as gas turbine combustors, afterburners, furnaces, and rocket engines. Oscillations can produce benecial increases in heat transfer rates and reduce pollutant formation. In other situations, these instabilities are undesirable because they may reduce the thermodynamic efciency of a combustor or become a source of system failure if their amplitude is not kept within an acceptable range. Oscillations in the pulse combustion drying systems are desired and useful. Combustion with oscillations may be treated as some regular form of unstable combustion.