Experimental data for the article: Swirler effects on combustion instabilities analyzed with measured FDFs, injector impedances and damping rates

This file contains the flame describing function data obtained in SICCA-Spray combustor at the EM2C laboratory with liquid heptane as fuel. The swirler used is called 716 and further details are available in the article “Swirler effects on combustion instabilities analyzed with measured FDFs, injector impedances and damping rates” Preethi Rajendram Soundararajan, Daniel Durox, Antoine Renaud, Guillaume Vignat, Sébastien Candel, Combustion and Flame, vol. 238, 2022.<br> The data is provided in the form of frequency, gain, phase, and relative velocity fluctuation levels and can be used to generate Figure 8 of the article.