Experimental study on the effect of swirler geometry and swirl number on flame describing functions

P Palies, D Durox, T Schuller… - Combustion Science and …, 2011 - Taylor & Francis
This paper deals with the response of swirling flames submitted to acoustic velocity
disturbances when the rotation of the flow is produced by an axial or a radial swirler. The …

Modeling of premixed swirling flames transfer functions

P Palies, T Schuller, D Durox, S Candel - Proceedings of the combustion …, 2011 - Elsevier
An analytical model is derived for the linear response of swirling flames submitted to velocity
disturbances. The flame dynamics is represented by a linearized version of the G-equation …

Dynamics of swirling flames

S Candel, D Durox, T Schuller… - Annual review of …, 2014 - annualreviews.org
In many continuous combustion processes, such as those found in aeroengines or gas
turbines, the flame is stabilized by a swirling flow formed by aerodynamic swirlers. The …

The combined dynamics of swirler and turbulent premixed swirling flames

P Palies, D Durox, T Schuller, S Candel - Combustion and flame, 2010 - Elsevier
The dynamics of premixed confined swirling flames is investigated by examining their
response to incident velocity perturbations. A generalized transfer function designated as …

Flame dynamics of a variable swirl number system and instability control

D Durox, JP Moeck, JF Bourgouin, P Morenton… - Combustion and …, 2013 - Elsevier
Swirling flame dynamics is investigated using a radial swirler equipped with movable
blades. This device allows to continuously change the swirl number and to examine various …

Progress and challenges in swirling flame dynamics

S Candel, D Durox, T Schuller, P Palies… - Comptes rendus …, 2012 - Elsevier
In many continuous combustion processes the flame is stabilized by swirling the injected
flow. This is the case for example in aeroengine combustors or in gas turbines where …

Prediction of pressure oscillations in a premixed swirl combustor flow and comparison to measurements

P Habisreuther, C Bender, O Petsch, H Büchner… - Flow, turbulence and …, 2006 - Springer
The most common and reliable technique used for flame stabilization of industrial
combustors with high thermal loads is the application of strongly swirling flows. In addition to …

Identification of the flame describing function of a premixed swirl flame from LES

HJ Krediet, CH Beck, W Krebs, S Schimek… - Combustion Science …, 2012 - Taylor & Francis
Thermo-acoustic characterization of gas turbine combustion systems is crucial for a
successful development of new gas turbine engines to meet emission and efficiency targets …

Combustion dynamics of turbulent swirling flames

C Külsheimer, H Büchner - Combustion and flame, 2002 - Elsevier
In the present paper the influence of a periodic excitation of the mass flow rate, varied in
frequency and in amplitude, on the isothermal flow field and on the flame characteristics of …

Combustion dynamics of a low-swirl combustor

DM Kang, FEC Culick, A Ratner - Combustion and Flame, 2007 - Elsevier
The methodology for the measurement of dynamic combustor behavior has never been
clearly established, due to the complexities associated with unsteady premixed flames and …