PSI - Issue 77

7

Alexander Backa et al. / Procedia Structural Integrity 77 (2026) 143–151 A. Backa et al. / Structural Integrity Procedia 00 (2026) 000 – 000

149

This refined equation allows for the estimation of PM concentration within the combustion chamber based on temperature. However, it's crucial to acknowledge that the equation's applicability is limited to the specific heat source, air supply and fuel type used in this study. Variations in fuel or combustion equipment settings would likely result in different PM concentrations in different regions. Given the strong temperature dependence observed, it is hypothesized that similar correlations may exist in other planes of the combustion chamber. Therefore, additional measurements are considered to verify this assumption in other planes of the combustion chamber. Figures 5-7 also display data from measurements, where approximation of values between measured points was performed using MATLAB, and these measured data were color-coded.

Fig. 5. Plotted measurements for temperature (left) and PM concentration (right) in XY plane.

Fig. 6. Plotted measurements for temperature (left) and PM concentration (right) in YZ plane.