Assessing pollutant flow in a marine engine exhaust based on concentrations measured at multiple points
This paper presents an analysis of the pollutant flow in the exhaust pipe of a marine engine based on measurements taken at two points 2.5 metres apart. The concentrations of the exhaust components - CO, NOx, HC - were recorded during engine operation at different load levels. The analysis aimed to determine whether significant changes in the chemical composition of the exhaust gases occur in the section of the exhaust pipe between the two points. The results showed that the differences in the recorded concentrations were negligible, confirming the homogeneity of the gas composition in the tested section and allowing this section of the pipe to be treated as a conduit with established flow characteristics. Based on the measurements, a CFD model will be developed to represent the distribution of concentrations and the flow of pollutants in the exhaust pipe. This model will be used to analyse mixing processes, possible local accumulation and the effect of engine geometry and operating conditions on the distribution of pollutants in the exhaust system.
Topic: Exhaust emissions and aftertreatment
Author: Magdalena Zimakowska-Laskowska
Co-authors: Artur Bogdanowicz, Tomasz Kniaziewicz
