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Unsteady Analysis of a Slinger Combustion Chamber by the Chemical Reactor Network Model

Soroush, Fariborz | 2012

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 44183 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Farshchi, Mohammad
  7. Abstract:
  8. Up to early seventies, Gas turbine combustor design was very time consuming and costly process including trial and errors through test rigs. Over the time analytical-experimental relationships take place as one of the key rules in the design processes. With the increasing power of computer calculations, computational fluid dynamics find its way in the procedure. Obtaining a deeper understanding of flow conditions and geometry inside the chamber, a great reduction in production time and cost of revisions to rigs and samples were achieved. Finding a precise prediction of polluting elements like NOx (less than 10 ppm) after many run hours and enormous computing resources, CFD methods must contain detailed kinetics. Since considering both flow condition and detailed kinetics needs huge resources and takes too much time, new methods based on flow simplifications and concentration on kinetics were developed. This is the concept behind a reactor: simple flow, detailed chemical kinetics. Specific study on slinger combustion chamber was needed due to its unknown inside flow nature. Based on literature, CFD solution of combusting flow in the chamber, and Chemical Reactor Network concept, a network was developed to cover the flow geometry and thermodynamic and thermochemistry condition in the slinger combustor. There was also an algorithm for network generation presented. Verification of data was done through the known methods for CRN verifications. With a reliable network, study on pollution and blow out of the chamber was started
  9. Keywords:
  10. Combustion Modeling ; Chemical Reactors ; Unsteady Analysis ; Combustion Chamber ; Slinger Chamber

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