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Optimization of Design Parameters for NOx Reduction in Combustion Process of an Effective Power Plants Burner

Abdollahpour, Mohammad Saleh | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 45918 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Mazaheri, Karim
  7. Abstract:
  8. In recent decade, pollution reduction is one of challenges in front of engineers. Nowadays accurate prediction of temperature and harmful Pollutants is vital, this leads to various models for turbulent combustion to predict combustion-generated pollutants. One of the most widely used models for simulating turbulent combustion is Flamelet because of separating the chemical reactions and the turbulent flow field. The unsteady state assumption of Flamelet model is capable of reasonably predict complicated phenomenon such as slow chemical reaction and radiation. The purpose of this study is to calculate combustion-generated emissions by Flamelet model and reduce these emissions by engineering techniques.
    For this purpose, first by a jet diffusion flame, the Flamelet model has been verified. In this section, the effect of various parameters such as turbulence models, adiabatic and non-adiabatic flow, flow profile correction, the use of different mechanisms, and … on the combustion field has been studied. In the last section by selection of appropriate technique, a power plant burner has been simulated and the amount of NOx emissions of burner has been studied. Finally, using different parameters, emissions dropped in the burner
  9. Keywords:
  10. Flare ; Nitrogen Oxides ; Flamelet Model ; Computational Fluid Dynamics (CFD) ; Turbulent Combustion

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