负荷控制风车低速轴流风机定常与非定常全环空模拟预测评估

IF 0.9 Q4 ENGINEERING, MECHANICAL

International Journal of Rotating Machinery Pub Date : 2018-05-17 DOI:10.1155/2018/7572631

A. Ortolan, Suk-kee Courty-Audren, Nicolas Binder, X. Carbonneau, Yannick Bousquet, F. Challas

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引用次数: 1

摘要

将稳定混合平面方法与在负载控制风车下运行的传统风机的非定常全环空计算的时间平均解进行了比较。目的是评估与更经典的方法相比，完整的非定常计算的附加值，特别是关于风车等异常操作中空间和时间周期性释放的影响。进行了整体稳态测量和转子径向特性实验。数值分析表明，用非定常模拟的时间平均解获得的风车整体性能与稳态情况相差不大，尤其是在转子中。定子中出现了一些差异，特别是在速度场方面。这一排的时间周期性释放对流动的非定常响应有明显的影响。一项详细的分析强调，在非定常情况下，也报告了在稳定方法中记录的风车流的一般模式。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Assessment of Steady and Unsteady Full Annulus Simulations Predictivity for a Low-Speed Axial Fan at Load-Controlled Windmill

A steady mixing plane approach is compared with the time-averaged solution of an unsteady full annulus calculation for a conventional fan operating at load-controlled windmill. The objective is to assess the added value of a complete unsteady calculation compared with a more classical approach, especially concerning the effect of the spatial and temporal periodicity release in such an unusual operation as windmill. Experiment with global steady measurements and rotor radial characterizations was conducted. Numerical analysis demonstrates that windmilling global performances obtained with the time-averaged solution of the unsteady simulation are not far different from the steady case, especially in the rotor. Some differences arise in the stator, particularly regarding the velocity field. Temporal periodicity release in this row has clearly a significant effect on the flow unsteady response. A detailed analysis highlights that generic patterns of windmilling flows recorded on a steady approach are also reported on the unsteady case.

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来源期刊

International Journal of Rotating Machinery ENGINEERING, MECHANICAL-

CiteScore

2.40

自引率

0.00%

发文量

审稿时长

25 weeks

期刊介绍： This comprehensive journal provides the latest information on rotating machines and machine elements. This technology has become essential to many industrial processes, including gas-, steam-, water-, or wind-driven turbines at power generation systems, and in food processing, automobile and airplane engines, heating, refrigeration, air conditioning, and chemical or petroleum refining. In spite of the importance of rotating machinery and the huge financial resources involved in the industry, only a few publications distribute research and development information on the prime movers. This journal is the first source to combine the technology, as it applies to all of these specialties, previously scattered throughout literature.