Position details

High performance solvers to predict acoustic modes in gas turbine chambers
Training › Computational Fluid Dynamics - Combustion

Required Education / Niveau requis

Master or Diplom Arbeit

From / Date de début

Beginning of 2013

Duration / Durée

6 to 8 months

Context / Contexte

Gas turbines sometimes exhibit unstable modes. These modes make noise when
they have a small amplitude. At high amplitudes, they can cause the death of
the engine in a few minutes. They are a significant danger. For companies like
Turbomeca and SNECMA, CERFACS develops acoustic solvers in collaboration
with Université de Montpellier and IRIT/ ENSEEIHT in Toulouse. These solvers
can predict the instability frequencies of the chambers if the temperature field
within the engine is known.  These codes are used together with LES codes (see
www.cerfacs.fr/cfd/LES.php) but are much faster and better adapted to
industrial use.

Description / Description

The trainee will work on the development and improvement of an acoustic solver
which already exists at CERFACS. The trainee will study unstable modes in an existing engine
and modify the physical submodels used in the code.Applications will be test cases proposed by Turbomeca and Snecma
on real engine geometries. The training period will correspond to 50 % applied
mathematics (for the resolution of the linear system) and 50 % combustion and
application. A PhD grant with SNECMA should be available
at the end of the project if the candidate is good and motivated (see www.cerfacs.fr/myplanet/).
The PhD should start in October 2013. 

Contacts / Contacts

Name: Poinsot Thierry
Phone: +33(0)5.61.19.30.34
Fax: +33(0)5.61.19.30.00
Email: poinsot@cerfacs.fr

Name: Nicoud Franck
Phone: 04 67 14 48 46
Fax: 04 67 14 93 16
Email: franck.nicoud@univ-montp2.fr

Name: Gicquel Laurent
Phone: 05-61-19-30-46
Fax: 05-61-19-30-00
Email: lgicquel@cerfacs.fr

Salary / Rémunération

580 euros