Laserinduzierte Fluoreszenz: Messung von Mischungsvorgängen

Laser-induced fluorescence: measurement of mixing processes

Masterthesis, Bachelorthesis

Laser-based optical diagnostics can be used to investigate complex physical systems non-intrusively and with high resolution. Laser-induced fluorescence (LIF) is suitable for obtaining spatially and temporally resolved information about, e.g., temperature or mixing in a flow. Molecules are excited with a laser and the characteristic fluorescence emission is detected with (high speed) cameras.

In this work, the aim is to investigate mixing processes in an optically accessible engine by means of two-color or two-line LIF. The aim of this fundamental experiment is to visualize and characterize the gas exchange between cycles and the interaction between the gas flow and an injected spray.

Within the scope of the work, the exact methodology will be selected for this purpose, the experiment will be set up and carried out, and the collected data will be evaluated and analyzed.

Above: Scaler field obtained by planar LIF. Below: Laser beams for multi-parameter measurements.