Study on Sampling Method for Performance Curve of Centrifugal Compressor
Study on Sampling Method for Performance Curve of Centrifugal Compressor
- Author(s): Zheng Liu ; Sujun Dong ; Hongsheng Jiang ; Aicheng Li ; Fanxin Meng
- DOI: 10.1049/cp.2018.0214
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- Author(s): Zheng Liu ; Sujun Dong ; Hongsheng Jiang ; Aicheng Li ; Fanxin Meng Source: CSAA/IET International Conference on Aircraft Utility Systems (AUS 2018), 2018 page (6 pp.)
- Conference: CSAA/IET International Conference on Aircraft Utility Systems (AUS 2018)
- DOI: 10.1049/cp.2018.0214
- ISBN: 978-1-78561-791-1
- Location: Guiyang, China
- Conference date: 19-22 June 2018
- Format: PDF
Based on the simulation data of performance of centrifugal compressor, this study analyzed the flow rate and efficiency curve of the compressor. By using third-order polynomial fitting method, we compared different results and found that the optimal sampling method was to have 5 lines of rotating speed with 7 different flow rate points in each line, in total 35 sample points, which satisfied the 5% fitting accuracy with minimal sample point and minimal experimental cost. Typical sample points for this optimal method was to set 3 lines of rotating speed and 3 flow rate points to be the maximum (rotating speed) flow rate, minimal (rotating speed) flow rate and the designed (rotating speed) flow rate, respectively. The rest sample points were distributed among those typical sample points. Finally, this sampling method was validated by the experimental results of centrifugal compressor.
Inspec keywords: fluid dynamics; polynomials; sampling methods; compressors
Subjects: Applied fluid mechanics; Mechanical machinery; Statistics; Algebra, set theory, and graph theory; Probability theory, stochastic processes, and statistics; Algebra; General fluid dynamics theory, simulation and other computational methods; Fluid mechanics and aerodynamics (mechanical engineering)
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