Task definition

In order to develop low-emission combustion chambers for future generations of aircraft engines, the injection of liquid fuel must be further optimized, as the size and distribution of the resulting fuel droplets have a significant influence on the formation of pollutants. The injection of liquid fuel is being intensively investigated at ITS with the aid of numerical simulations. From these simulations, droplet diameters and velocities in the vicinity of the injector can be determined. These variables are then to be used as droplet start conditions for Euler-Lagrange simulations in order to model the spray that forms in the far field of the injector.

As part of this work, an existing setup for carrying out Euler-Lagrange simulations with OpenFOAM is to be improved. In particular, the focus is on the further development of the interface for specifying the droplet start conditions. Tabulated approaches or machine learning approaches can be used for this purpose. With the improved specification of the droplet start conditions, flow simulations are then to be carried out and evaluated. Among other things, a comparison with experimental measurements carried out in parallel will be useful here.

The work offers the opportunity to gain extensive experience in the field of numerical fluid mechanics. Ideally, you should already have some experience in the field of CFD simulation and in working with Linux are available.