Task
The cooling of combustion chamber walls in aircraft engines is becoming increasingly important due to the ongoing development towards higher turbine inlet temperatures and pressure ratios. Impingement-effusion cooling is a modern cooling technology that is increasingly being employed in current generations of aero engines. At ITS, this novel technology is being investigated with regard to its thermal and aerodynamic characteristics, with the aim of enabling targeted optimization of the cooling concept through a detailed understanding of the underlying physical processes.
Within the scope of this thesis, numerical methods will be used to reproduce an experimental test rig for the investigation of impingement-effusion cooling available at ITS. In addition to the flow domain, the heat transfer within the effusion plate, which is crucial for the cooling performance, will also be simulated.
The thesis provides the opportunity to apply and further deepen the knowledge of fluid mechanics acquired during the degree program in the context of a scientifically relevant investigation. ITS offers extensive expertise as well as modern software and hardware for conducting advanced numerical studies.
The thesis comprises the following work packages:
- Familiarization with the topics of impingement-effusion cooling, conjugate heat transfer (CHT) methods, and computational fluid dynamics (CFD)
- Development of a CHT simulation of the experimental test rig using RANS methods
- Extension of the simulation to Unsteady RANS (URANS) or Large Eddy Simulation (LES)
- Evaluation and comparison of the numerical results with experimental thermal and aerodynamic data
