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Numerical Simulation of Tubular Type Combustion Chamber: A CFD Approach

[+] Author Affiliations
Digvijay B. Kulshreshtha, S. A. Channiwala, Saurabh Dikshit

S. V. National Institute of Technology

Paper No. IMECE2006-13191, pp. 189-195; 7 pages
doi:10.1115/IMECE2006-13191
From:
  • ASME 2006 International Mechanical Engineering Congress and Exposition
  • Energy Conversion and Resources
  • Chicago, Illinois, USA, November 5 – 10, 2006
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 0-7918-4783-7 | eISBN: 0-7918-3790-4
  • Copyright © 2006 by ASME

abstract

The challenges in designing high performance combustion systems have not changed significantly over the years, but the approach has shifted towards a more sophisticated analysis process. A technical discussion on combustion technology status and needs will show that the classic impediments that have hampered progress towards near stoichiometric combustion still exist. Temperature rise, mixing, liner cooling, stability, fuel effects, temperature profile control and emissions continue to confront the aerodynamic and mechanical designers with a plethora of engineering dilemmas and trade-offs. The process of combustion chamber design has taken a new meaning over the past several years as three dimensional codes and other advanced design and validation tools have finally changed the approach from a "cut and burn" technique to a much more analytical process. All of these new aspects are now integral elements of the new equation for advanced combustor design that must be fully understood and utilized. Only then will the operable, high temperature capable or low emission combustor systems needed for future military and civil aircraft as well as for stationary gas turbines can be developed. The present paper is an attempt to analyze the flow patterns within the combustion chamber of a 20 kW gas turbine engine using a CFD code CFX. It summarize the CFD simulation of the complete combustion chamber including primary zone, intermediate zone and dilution zone and finally attempts to achieve temperature distribution in the entire combustion chamber. These CFD results are then compared with experimental readings which not only validates analytical results but leads towards improved design.

Copyright © 2006 by ASME

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