hello i am doing diesel combustion problem. i want to know when i use thermal Nox and Mauss soot model in which units i geet my results i.e NOx and SOot values

mass fraction

thanks but can you tell me how to change units in to g/kWh

Get the mass flow of your emissions at the outlet. This should be in your info file. If not use the 'operate' commands to get a value. Divide by the heat input into your system.

q_SOOT (or q_NOx) in [g/(kWh)] if I'm right it's:
SOOT_conc*cyl_mass*60^2*10^6*number_of_cyl/(pme*cyl_max_volume)
where pme is in Pa (Star writes in Pa) and cyl_max_vol is in m^3

Hi Andrea Can u tell me whats pme in equatoin you gave

mean effective pressure

Thanks

yes, and note that cylinder mass in that formula it's in kg as written out by Star