Cerfacs Enter the world of high performance ...

The 2 March 2017 at 11h00

Wide Interest Seminar : Christian Kraus


“Impact of Heat Transfer on Combustion Instabilities – Progress and Challenges”

by Christian Kraus, IMFT (Toulouse)


Combustion instabilities are still major challenges in the design and operation of modern combustors. Large Eddy Simulation (LES) is a powerful method that allows investigating combustion instabilities and improving the understanding of their driving mechanisms. However, combustion instabilities are strongly influenced by heat transfer processes, which are often neglected in numerical simulations. This leads to uncertainties regarding the accuracy of the results and the prediction capabilities of LES. The talk addresses this topic by giving examples of previous studies that illustrate the influence of heat transfer on combustion dynamics. Furthermore, it discusses results of reactive LESs of a laboratory-scale swirl combustor (KIT-Burner), in order to highlight the impact of different thermal boundary conditions (adiabatic, heat loss, coupled simulations with AVTP) on the unstable thermoacoustic modes in the combustor. The presented numerical results were obtained with AVBP in the context of the ERC advanced grant INTECOCIS (http://intecocis.inp-toulouse.fr/).


One Cerfacs’ proposal accepted in PRACE 15th call

superadmin |  4 December 2017

This study focuses on Hall-effect thrusters, which were first invented in the 1960s. Although such systems have been extensively studied, the detailed physics of the magnetized plasmas in these thrusters is very complex and several plasma processes that have direct influence on the thruster...Read more

CECI Contribution to CNRS’ “Petit Illustré” on Complex Systems (CNRS Edition)

ROGEL |  12 October 2017

CECI (Cerfacs, CNRS) and IMFT are both working on numerical modelling of the processes causing river flooding and their uncertainties. A common contribution on this subject, signed by Sophie Ricci and Hélène Roux, appears in Vol. 34 of the "Petit Illustré" collection, edited by CNRS.Read more