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Show 13 6 Conclusion The computational fluid dynamics based design and analysis tool for combustion applications has been presented. Because of the fundamental physics and reduced elementary chemistry applied, a good generality and qualitative accuracy have been achieved. A n essential surplus value for the design, analysis and troubleshooting of various combustors with various fuels has been achieved in addition to the more traditional methods. The benefits of the CFD-based modelling lie in the identifying of the essential mechanisms as well as trends and causes. In troubleshooting cases, modelling is one of the most descriptive and useful tools to find out the reasons as to why things are not as they should be be and to give advice on what should be done to reach the desired state. In conclusion, CFD-based modelling has proven to be a powerful tool for the design, troubleshooting and analysis of many industrial processes including combustion, giving a deeper insight into and an understanding of the processes if applied with care and experience. Appendixes 1. Computed flow fields of Naantali Unit No. 3, Boiler I and Boiler II 2. Computed temperature fields of Naantali Unit No. 3 3. Computed temperature fields of Naantali Unit No.3, Boiler I and Boiler II 4. Proposed burner arrangements of Naantali Unit No. 3 5. Computed temperature fields of originally lignite fired boiler, without O F A 6. Computed temperature fields of originally lignite fired boiler, with O F A 7. The studied burner arrangements of the originally lignite fired boiler 8. Computed flow field of the existing burner in Meri-Pori 9. Computed flow field of the new burner configuration in Meri-Pori 10. Computed temperature field of the existing burner in Meri-Pori 11. Computed temperature field of the n e w burner configuration in Meri-Pori 12. Computed O2 field of the existing burner in Meri-Pori 13. Computed 0 2 field of the new burner configuration in Meri-Pori |