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Performance prediction and progress towards multi-disciplinary design of contra-rotating open rotors

机译：对开转子的性能预测及多学科设计的进展

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摘要

At DLR's Institute of Propulsion Technology, the prediction tools and multi-disciplinary optimisation strategies developed for turbofan engines have been extended to contra-rotating open rotors (CROR). Thereby the objective has been to appraise and improve the performance of CROR engines and thus to reduce their environmental impact. The present paper reviews the intermediate progress achieved in this scope. The prediction is based on analytical and CFD methods and covers the fields of engine performance analysis, aerodynamics and acoustics. The aerodynamic and acoustic results could be partly validated through the comparison to experimental data obtained from wind-tunnel tests. In a multi-disciplinary approach the aforementioned aspects are optimised together. First results of an aero-acoustic optimisation are presented. Furthermore this paper undertakes some comparison between high-bypass ratio turbofan engines and open-rotor concepts.
机译：在DLR的推进技术研究所，为涡轮风扇发动机开发的预测工具和多学科优化策略已扩展到反向旋转开放转子（CROR）。因此，目标是评估和改善CROR发动机的性能，从而减少其对环境的影响。本文回顾了在这一范围内取得的中间进展。该预测基于分析和CFD方法，涵盖了发动机性能分析，空气动力学和声学领域。通过与风洞试验获得的实验数据进行比较，可以部分验证空气动力学和声学结果。在多学科方法中，上述方面被一起优化。提出了空气声学优化的初步结果。此外，本文对高旁路比涡轮风扇发动机和开转子概念进行了一些比较。

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  • 来源
    《The Aeronautical Journal》 |2014年第1208期|1159-1179|共21页
  • 作者

    S. Guerin; R. Schnell; R. G. Becker;

  • 作者单位

    DLR, Institute of Propulsion Technology Engine Acoustics Department Berlin, Germany;

    DLR, Institute of Propulsion Technology Fan and Compressor Department Cologne, Germany;

    DLR, Institute of Propulsion Technology Engine Department Cologne, Germany;

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