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- W2151283334 abstract "Performance of an Axial Flow Helium Compressor under High Through-Flow Conditions C.L. de Wet Department of Mechanical and Mechatronics Engineering, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa. Thesis: MScEng (Mech) March 2010 The purpose of this investigation is to determine the performance of an axial ow compressor operating in a closed loop helium cycle under high throughow conditions. The GTHTR300 four-stage helium test compressor was chosen for this investigation. Limited information on the helium test compressor's blade pro les are available, therefore a mathematical model was developed to calculate the blade geometries based on the theory of Lieblein and Aungier. A locally available three-stage compressor was used to con rm whether the mathematical model calculated the blade pro le geometries correctly. The Stellenbosch University Compressor Code (SUCC), an axisymmetric inviscid throughow code, was used to compare the performance of the calculated three-stage compressor blade geometries with available experimental data. Excellent correlation was obtained, thus it was concluded that the mathematical model as well as the SUCC could be used to predict the performance of an axial ow compressor. The blade geometries of the helium test compressor were calculated and the pressure ratio and e ciency predictions of the SUCC correlated well with the experimental data. The helium test compressor was simulated to verify the calculated blade geometries further using the Computational Fluid Dynamics (CFD) package NUMECA FINE/Turbo. The FINE/Turbo pressure ratio and e ciency predictions compared adequately with the SUCC and available experimental data, especially in the design region. At high mass ow rates the stator blade row experiences negative incidence stall which results in a large recirculation zone in the stator blade wake." @default.
- W2151283334 created "2016-06-24" @default.
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- W2151283334 date "2010-03-01" @default.
- W2151283334 modified "2023-09-24" @default.
- W2151283334 title "Performance of an axial flow helium compressorunder high through-flow conditions" @default.
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