Naslov
Application of Reduced Mechanisms for Nitrogen Chemistry in Numerical Simulation of a Turbulent Non-Premixed Flame

Autori
Vujanović, Milan ; Baburić, Mario ; Duić, Neven ; Priesching, Peter ; Tatschl, Reinhard

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

Izvornik
Conference Proceeding: Modelling Fluid Flow / Lajos, T., Vad J. - Budimpešta, 2006, 916-22

Skup
International Conference on Fluid Flow Technologies

Mjesto i datum
Budimpešta, Mađarska, 06.09.2006. - 09.09.2006

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
FIRETM; NOx; Sandia flameD;
(FIRETM; NOx; Sandia flameD)

Sažetak
In this paper, the formation of nitrogen pollutants in computational fluid dynamics (CFD) simulation of turbulent non-premixed flame was modelled by coupling a reduced NO chemical reaction mechanisms with comprehensive combustion model in commercial CFD code FIRETM. The reduced nitrogen scheme is based on thermal NO formed by oxidation of atmospheric nitrogen and prompt NO formed by reactions of atmospheric nitrogen with hydrocarbons radicals in fuel-rich regions of the flame. The effects of the turbulent fluctuations on the NO reaction rates were accounted for by integrating the kinetic rates with respect to fluctuating temperatures over presumed probability density function (PDF). For combustion prediction a steady laminar flamelet model (SLFM) was employed. The NO formation was decoupled from the comprehensive combustion model and considered in post-processor routine using converged solution of a pre-calculated flame structure. The NO predictions are compared with experimental data.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA