首页|Body-force modeling considering induced upstream effects for a transonic compressor with total temperature distortion
Body-force modeling considering induced upstream effects for a transonic compressor with total temperature distortion
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To numerically study the impact of total temperature distortion on a transonic compres-sor with reduced computational costs,a Body-Force Model(BFM)is developed.Firstly,the inter-actions between the distorted flow and the compressor are analyzed using full-annulus Unsteady Reynolds-Averaged Navier-Stokes(URANS)results and the orbit method.It is found that the induced swirl distortion and the mass flux nonuniformity are intensified in the compressor upstream flow field.A correction factor is thus added to the BFM to account for the effect of the induced swirl,which is crucial for the accurate representation of distortion transfer in the intake.Then,steady simulations with large-amplitude 180° circumferential total temperature distortion are per-formed using the developed BFM.It is shown that the distorted compressor map simulated with the BFM matches well with URANS results.The circumferential phase shift of total temperature and the generation of the additional total pressure distortion across the rotor are in line with the time-averaged URANS flow field.The compressor upstream effects on the distorted inflow can also be exactly captured.All above-mentioned results demonstrate the BFM developed in this paper can effectively capture the distorted flow features inside the compressor,and significantly reduce the computational costs by five orders of magnitude compared with URANS.
Upstream effectOrbit methodInduced swirl distortionBody force modelCorrection factorTime-averaged URANS
Jiahui QIU、Chen YANG、Wenqiang ZHANG、Min ZHANG、Juan DU
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Digital Twin Research Center,Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China
School of Engineering and Science,University of Chinese Academy of Sciences,Beijing 100190,China
National Key Laboratory of Science and Technology on Advanced Light-duty Gas-turbine,Chinese Academy of Sciences,Beijing 100190,China
School of Mechatronical Engineering,Beijing Institute of Technology,Beijing 100081,China
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National Science and Technology Major Project,ChinaNational Science and Technology Major Project,ChinaScience Center for Gas Turbine Project,ChinaNational Natural Science Foundation of China
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