Naslov
Numerical Modelling of Emissions of Nitrogen Oxides in Solid Fuel Combustion

Autori
Bešenić, Tibor ; Vujanović, Milan ; Mikulčić, Hrvoje ; Duić, Neven

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Digital Proceedings of the 12th Conference on Sustainable Development of Energy, Water and Environment Systems - SDEWES / Ban, Marko - Zagreb : Fakultet strojarstva i brodogradnje Sveučilišta u Zagrebu, 2017

Skup
12th Conference on Sustainable Development of Energy, Water and Environment Systems – SDEWES Conference

Mjesto i datum
Dubrovnik, Hrvatska, 04.10.2017. - 08.10.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Solid fuel combustion, nitrogen oxides, drop tube, CFD

Sažetak
Among combustion products, nitrogen oxides are one of the main contributors to negative impact to the environment, participating in harmful processes such as tropospheric ozone and acid rains production. The main source of emissions of nitrogen oxides is the human combustion of fossil fuels. Their formation models are investigated and implemented with the goal of obtaining a tool for studying the nitrogen- containing pollutant production. In this work, numerical simulation of solid fuel combustion was carried out on a three- dimensional model of a drop tube furnace by using the commercial software FIRE. This code was used for simulating turbulent fluid flow and temperature field, concentrations of the reactants and products as well as the fluid- particles interaction by numerically solving the integro- differential equations that govern these processes. Chemical reactions mechanisms for the formation of nitrogen oxides were implemented by the user functions. To achieve reasonable calculation times for running the simulations, as well as efficient coupling with the turbulent mixing process, the nitrogen scheme is limited to sufficiently few homogeneous reactions and species. Turbulent fluctuations that affect the reaction rates of nitrogen oxides’ concentration are modelled by probability density function approach.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA