Detached Eddy Simulation of Turbulent Spray Combustion in a Turbo Jet Combustor-Prediction of NOx Concentration


Sehole H. A. H., Riaz R., MAQSOOD A.

AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022, California, Amerika Birleşik Devletleri, 3 - 07 Ocak 2022, (Tam Metin Bildiri) identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.2514/6.2022-0487
  • Basıldığı Şehir: California
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Orta Doğu Teknik Üniversitesi Kuzey Kıbrıs Kampüsü Adresli: Evet

Özet

Detached-eddy simulation is a potential methodology for predicting multiphase reactions in real-world gas-turbine combustion chambers with complicated physical phenomena such as turbulent combustion dynamics. The combustion model used in this paper is based on a laminar finite rate model, which ignores the effect of turbulent fluctuations and uses Arrhenius kinetic equations to compute reaction rates. Developments in computational fluid mechanics have paved the way for a deeper understanding of multiphase flow dynamics. The study looks at the effects of kerosene used as discrete phase particles on temperature and NOx emissions. The model geometry is of a cannular-type combustion chamber. The outlet temperature of the combustion chamber is successfully validated by the experimental results. Similarly, NOx emissions are also computed upon the completion of transient analysis. NOx concentration is found to be greater at higher temperature ranges. Moreover, the results predicted from discrete phase particles are improved as compared to the other model.