Wall modeling of reacting turbulent flow

Institut
Lehrstuhl für Aerodynamik
Typ
Semesterarbeit / Masterarbeit /
Inhalt
theoretisch /  
Beschreibung

Liquid Rocket Engines (LRE) face extreme thermal conditions during
the operation time, such as high combustion temperatures up to 3600 K
combined with a high combustion chamber pressure up to 20 MPa.
The prediction of heat transfer at the combustion chamber wall is a
crucial for performance as well as for safety reasons. In order to study
unsteady turbulent combustion within LRE, LES simulations are a helpful
tool. For an accurate prediction of wall heat fluxes the boundary layer
must be resolved, which leads to high computational cost. Modeling the
near wall area using wall models can alleviate this cost.


Our in-house code CATUM, which solves the compressible Navier-Stokes
equations using a LES approach is coupled with a wall model based on
turbulent boundary layer equations. The wall model must be extended in
order to take chemical reactions into account, using combustion models
which can be found in literature. These available models for reacting
boundary layers are based on several modeling parameters and
assumptions, which must be validated and improved during the work.

Voraussetzungen
  • Ability to work independently
  • Basic knowledge of numerical flow simulation
  • Good knowledge of thermodynamics and gasdynamics
  • Basic knowledge of Fortran
  • Knowledge of linux advantageous
Möglicher Beginn
sofort
Kontakt
Alexander Doehring
Raum: MW 1676b
Tel.: +49 89 28916148
alex.doehringtum.de
Ausschreibung