Task

The cooling of components subjected to high thermal loads plays a key role in modern gas turbines and aircraft engines. At the ITS, the cooling effect of film cooling blowout is investigated experimentally using infrared thermography (IRT).

IRT measurements allow for the determination of wall temperatures, thereby enabling the identification and quantification of regions within the film cooling system that are more or less effectively cooled. Through several analysis steps, the measured wall temperatures are coupled with the convective heat fluxes of the film cooling. Of particular interest here is the correction for thermal radiation within the test section. Using a radiation simulation, heat fluxes due to radiation can be quantified, and measured results can be corrected accordingly. As part of this work, two existing radiation simulations will be compared, adapted, and evaluated. Subsequently, the final simulation will be applied to existing data, which will then be analyzed.

The project consists of the following work packages:

• Familiarization with the topics of film cooling and infrared thermography
• Familiarization with the software COMSOL Multiphysics and Ansys Fluent
• Comparison and adjustment of the existing radiation simulations
• Validation and evaluation of the results