Numerical Simulation Application for the Design and Fine-Tuning of Small-Sized Gas Turbine Engine Combustor

摘要

The small-sized GTE are used more and more both as the basis of power plants and power machines forvarious purposes. The technical and operational characteristics of these engines are largely determined by the designquality of their combustion chambers (CC). One of the most advanced methods of CC scientific investigation is the benchtesting. However, such CC operation study is complicated by labour-intensiveness of an experiment and its significantcosts. Therefore, in recent years GTE designers started to use widely the numerical simulation for these purposes.However, the level of such calculation development does not allow often to solve the issue of CC fine-tuning in order toachieve the required parameters. It is also difficult to determine the reliability degree of such calculations. The preliminarycalculation of the combustion chamber was performed first of all. Its purpose is the CC shape development and itsdetermination of its geometric dimensions. At that, the main requirement was to ensure the possibilities of one CCplacement between the previously-designed compressor and the turbine and the performance of a whole set of technicalspecifications by the engine. At the second stage using The CC fine-tuning was performed in order to optimize theperformance by using CFD-calculation. At that the calculated method was used for which the verification has beenperformed by the bench tests. Such a CC fine-tuning allowed to reduce the product development period and improve itscharacteristics.