Heat Load on the Walls of an Annular DLE Combustor Calculation and Comparison With Experiments FREE

[+] Author Affiliations
Jacek Janczewski, Ulf Nilsson, Torsten Strand, Christian Troger

ABB STAL AB, Finspong, Sweden

Paper No. 98-GT-454, pp. V003T06A042; 9 pages
  • ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Stockholm, Sweden, June 2–5, 1998
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7864-4
  • Copyright © 1998 by ASME


The knowledge of the hot gas side heat load is a necessary prerequisite for the design of the advanced cooling scheme of a dry low-NOx combustor and the mechanical integrity (MIT) calculations of the combustor walls. The magnitude and the spatial distribution of the heat fluxes has to be known in the very early phase of the design, where there is no hardware available.

The evaluation of a combustor wall design has to be based on known process data, thermodynamic and combustion parameters and has to rely on computational methods and experience.

A stepwise computational approach is presented to reach this target utilising

• 1D flow and Nusselt-Number correlations

• 2-D boundary layer code

• computational fluid dynamics (CFD)

For the validation of the method atmospheric and pressurised single burner combustor tests were performed.

The relative merits and pitfalls of the different methods are discussed in detail. Recommendations for their utilisation within the design process and for their further development are given.

Copyright © 1998 by ASME
This article is only available in the PDF format.



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