Measurement and prediction of emissions of aerosols and gaseous precursors from gas turbine engines (PartEmis): an overview

An overview of the goals and achievements of the European PartEmis project (Measurement and prediction of emissions of aerosols and gaseous precursors from gas turbine engines) is discussed in this paper. PartEmis is focussed on the characterisation and quantification of exhaust emissions from a gas turbine engine. The engine was composed of a combustor and a unit to simulate a 3-shaft turbine section (so-called Hot End Simulator; HES). A comprehensive suite of aerosol, gas and chemi-ion measurements were conducted under different, (i) combustor and HES operating conditions, (ii) fuel sulphur and APA101 fuel additive concentrations. Aspects of volatile particle formation, growth factors of carbonaceous particles and sulphur (IV)/sulphur (VI) formation have been modelled using one- and multidimensional representations of the HES and nearfield plume, respectively. The combustor chosen in PartEmis behaves like a typical aircraft engine combustor with respect to thermodynamic data as well as to gas and particulate emissions, which suggests that the PartEmis database may be applicable to contemporary aircraft engines.