Compressor map computation based on 3D CFD analysis

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• 作者：Christian Janke ; Dieter Bestle ; Bernd Becker
• 关键词：Compressor map ; Optimization ; Mesh adjustment ; CFD initialization
• 刊名：CEAS Aeronautical Journal
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：6
• 期：4
• 页码：515-527
• 全文大小：2,344 KB
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• 作者单位：Christian Janke (1)
  Dieter Bestle (1)
  Bernd Becker (2)
  
  1. BTU Cottbus-Senftenberg, Siemens-Halske-Ring 14, 03046, Cottbus, Germany
  2. Rolls-Royce Deutschland Ltd & Co KG, Eschenweg 11, 15827, Blankenfelde-Mahlow, Dahlewitz, Germany
  
• 刊物主题：Aerospace Technology and Astronautics;
• 出版者：Springer Vienna
• ISSN：1869-5590

文摘

The focus of the paper is on procedures and strategies to compute high-fidelity compressor maps for aero engines based on 3D CFD. The developed automatic process starts with an operation point analysis where a convergence checker terminates the running 3D flow analysis as soon as physical quantities such as mass flow or aerodynamic blade row loss have converged. Subsequently, the corresponding compressor speed line is determined, where operation limits like surge and choke are detected by solving optimization and root search problems, respectively. Such speed lines also have to be calculated for various other shaft speeds to obtain the whole performance map. This is achieved by adjusting shaft speed and boundary conditions, where the mesh for variable stator vanes and the amount of bleed mass flow are adapted automatically according to given schedules. Finally, the developed process is applied to a 4.5-stage axial compressor to demonstrate feasibility of the proposed strategies. Keywords Compressor map Optimization Mesh adjustment CFD initialization