Evaluation of the influence of expansion ratio on the dynamics of premixed flames

Institut

Professur für Thermofluiddynamik

Typ

Semesterarbeit / Masterarbeit /

Inhalt

theoretisch /  

Beschreibung

Thermo-acoustic instabilities are a crucial problem in modern turbine / rocket engine design, which could lead to malfunctioning or destruction of the system. In order to mitigate these instabilities it becomes necessary to understand the response of flames to their acoustic environment.
In recent studies several methods have been used to model the flame dynamics based on a purely kinematic flame sheet approach. Neglecting the feedback between flame and flow, such ansatzes merely depend on geometrical parameters of flame and flow specific quantities. Especially, the desnity ratio of burnt and unburnt gases quantifying the expansion mechanism of the flame is disregarded.

The main goal of this thesis is to evaluate whether accounting for volume expansion effects is necessary to describe the physical mechanisms of the feedback loop. For this, important parameters for the flame dynamics are altered in CFD simulations. 

If you are interested in this thesis or have any more questions regarding the topic, feel free to contact me either via mail or simply come by my office.

Voraussetzungen

Experience with CFD (OpenFOAM)
Experience with MATLAB and/or Python
Good analytical skills
Interest in combustion dynamics

Möglicher Beginn

sofort

Kontakt

M.Sc. Korbinian Niebler
Raum: 5507.EG.705
Tel.: +49 89 289 16204
korbinian.nieblertum.de

Ausschreibung