Numerical Investigation of the Impact of the Compressor Operation Mode on Working Process of the Combustion Chamber

2017 International Conference on Aerospace Technology, Communications and Energy Systems

航空航天工程;无线电电子学;能源学

Orlov, M.Yu.^1 ; Lukachev, S.V.^1 ; Anisimov, V.M.^1

Samara National Research University, Scientific Educational Center of Fluid Dynamics Research, Moskovskoye Shosse 34, Samara

443086, Russia^1

关键词: Combustion efficiencies;    Combustor outlets;    Compressor blades;    Ecological performance;    Geometric modeling;    High pressure compressor;    Integrated compressors;    Numerical investigations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/302/1/012020/pdf
DOI  :  10.1088/1757-899X/302/1/012020

学科分类：航空航天科学

来源: IOP

【 摘 要 】

The method of integrated compressor/combustor simulation was used to investigate the impact of flow distortion, appeared due to compressor blades, during the combustion chamber workflow. The method was improved in terms of generating a common grid and of principles of the boundary conditions settings. The geometric model includes four geometric volume bodies: guide vanes of the penultimate stage of high-pressure compressor, the impeller and guide vanes of the last stage and the flow path of combustion chamber. The calculation was carried out for some operation mode of the engine (nominal, 0.7 of nominal and 0.5 of nominal regimes) with and without compressor. The results were compared with the results of combustion chamber simulation without the compressor. Simulations showed that blade wakes extend up to the flame tube head. These wakes influence on the flame tongue, pressure field, temperature and velocity in the recirculation-mixing zone. It can influence on combustion efficiency, ecological performance and on temperature field at the combustor outlet. Thus, the simulations, which take into account combustion chamber and compressor, are more fully represent the characteristics of the working process of the combustion chamber and increase the efficiency of the design of new products.