Unsteady cooperative flow type in the axial compressor
Unsteady cooperative flow type in the axial compressor
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DOI：
10.1080/10020070512331343130
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发表时间：
2005-10
期刊：
影响因子：
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通讯作者：
Zheng Xinqian;Z. Sheng;Hou Anping;Xiong Jinsong
中科院分区：
文献类型：
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作者：
Zheng Xinqian;Z. Sheng;Hou Anping;Xiong Jinsong
为了提高轴流压气机的性能，本文提出了一种实现非定常协同流型的方法，作为新一代轴流压气机设计系统的一个重要目标。利用非定常激励，使压气机的非定常自然流态转变为非定常协同流态，从而提高压气机的气动性能。数值模拟结果表明，在较宽的亚音速工况范围内，二维叶栅均能获得明显的正效应。在二维超声速工况下，非定常激励对流场时空结构的影响不大。但在三维跨音速工况下，可以得到积极的效果。此外，还讨论了非定常协同流的工程应用。
Abstract For increasing the performance of the axial compressor, a method for realizing unsteady cooperative flow type is proposed in this paper as a critical objective in the new generation of the axial compressor design system. Unsteady excitations were utilized to trigger the transformation from the unsteady natural flow pattern into the unsteady cooperative flow pattern, resulting in increment of aerodynamic performances of axial compressor. Numerical simulations show that distinct positive effect can be obtained for the 2D cascade in a wide range of subsonic working conditions. No positive effect can be observed under the 2D supersonic working conditions and unsteady excitations have little influence on the flow field space-time structure. However positive effect can be obtained under the 3D transonic working conditions. In addition, engineering applications of unsteady cooperative flow type are discussed.