Computations of the HDR thermal mixing experiments and analysis of mixing phenomena

The calculations presented in the following were performed within the analytical part of the German HDR research programme into mixing phenomena during the high pressure injection phase. For a selected experiment, pre-test calculations with the code SOLA-PTS are presented and discussed in comparison with the experimental data. The data were used also for a detailed analysis of mixing phenomena near the injection nozzle. The governing parameters identified in this analysis, and the physical models based on them are presented and discussed. Finally, suggestions for improvements of an existing physical model are made, taking into account available international experimental data.