Non Equilibrium Effects in NO Formation Modeled With PDF Method Using Adaptive Look-Up Tables FREE

[+] Author Affiliations
V. Risalvato, F. Biagioli

CRS4, Centre for Advanced Studies and Development in Sardinia, Uta, CA, Italy

Paper No. 99-GT-431, pp. V002T02A068; 7 pages
  • ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 2: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Indianapolis, Indiana, USA, June 7–10, 1999
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7859-0
  • Copyright © 1999 by ASME


The objective of this work is to investigate the finite rate kinetics effect on NO formation in turbulent non-premixed flames by using the presumed pdf method with two scalars where one scalar accounts for finite-rate chemistry. To overcome the increase of computational time demanded by the above method, an adaptive non-structured table look-up procedure has been implemented to interpolate thermochemical properties. These quantities are obtained from the look-up table during the integration of the turbulent reacting flow thus replacing a very computationally onerous integration with a less expensive interpolation. To study the non-equilibrium effects in non-premixed combustion and to assess the capabilities of the adaptive table, the numerical simulation of a turbulent syngas-air flame (experimentally studied by Drake et al.[4]) has been performed under equilibrium and non-equilibrium conditions.

Copyright © 1999 by ASME
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