Thermo-Fluidic Instabilities in Cone Stabilized Non-Premixed Combustor

Publication year: 2011
Source: Applied Thermal Engineering, In Press, Accepted Manuscript, Available online 13 June 2011

M., Madanmohan , A., Kushari , K., Ramamurthi

Combustion instability is characterized by large amplitude pressure oscillations driven by unsteady heat release from chemical reactions. Experiments were carried out in a cone-stabilized rectangular chamber burning liquid petroleum gas (LPG) with air at Reynolds number between 4993 and 9487. The influence of variation in inlet length on pressure perturbations of the cone-stabilized flame was determined. While the cold flow measurements in the combustion chamber showed influence of inlet length on the characteristic standing wave frequencies of pressure oscillations in the chamber, the heat release from the diffusion flame did not respond to the standing wave frequencies. The frequencies of…