0

Full Content is available to subscribers

Subscribe/Learn More  >

Development and Application of CFD-Based Analysis Methodology to Evaluate Efficiency of Low NOx Combustion Technologies

[+] Author Affiliations
Yu. G. Kutsenko, S. F. Onegin

JSC Aviadvigatel, Perm, Russia

Paper No. GT2006-90530, pp. 453-465; 13 pages
doi:10.1115/GT2006-90530
From:
  • ASME Turbo Expo 2006: Power for Land, Sea, and Air
  • Volume 1: Combustion and Fuels, Education
  • Barcelona, Spain, May 8–11, 2006
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4236-3 | eISBN: 0-7918-3774-2
  • Copyright © 2006 by ASME

abstract

A combustor is a crucial unit of gas turbine engine because it should work reliably at high temperatures; provide a suitable temperature distribution at entry to the turbine and supply a low emission level of harmful substances. An operational development of combustors is a very complex process, involving a great volume of design and experimental work. The application of computational fluid dynamics (CFD) methods allows to decrease the volume of experimental works on operational development of combustors and to make changes to the design of combustors on early stages. This paper describes development and validation of CFD-based analysis methodology, used to predict NOx emission level for different types of gas turbine combustors. This methodology includes comprehensive modeling of physical and chemical processes that take place in gas turbine combustors: turbulent flow of reacting gases, heat transfer, chemical kinetics and formation of nitric oxide. To simulate these processes the following mathematical models were used and validated: • Navier-Stockes equations; k-ε RNG, k-ε RSM, k-ω SST turbulence models; • Flamelet and Flamefront combustion models; • Different chemical kinetics mechanisms, describing methane and aviation kerosene oxidation processes; • Diffusion radiation model and discrete ordinates method to calculate radiation heat fluxes; • Extended n-heptane oxidation mechanism to simulate PAH and soot formation; • Prompt and thermal NO formation mechanisms; • Wide band exponential model for gases and empirical correlation for soot to calculate radiation properties of medium. Different factors that affect NOx formation process are considered. They include O and OH prediction methods, influence of radiation heat transfer, and choice of combustion and turbulence models. Developed methodology was used to simulate combustion process in gas turbine combustors that use RQL, LPP, wet NO technologies of low NOx combustion. Merits, demerits and peculiarities of considered low NOx combustion technologies are discussed. According to the results of the analysis, the most efficient technology for NOx reduction was selected.

Copyright © 2006 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In