Numerical and experimental investigation of flow mechanism and application of tandem-impeller for centrifugal compressor
Numerical and experimental investigation of flow mechanism and application of tandem-impeller for centrifugal compressor
复制标题
离心压缩机串联叶轮流动机理及应用的数值与实验研究
DOI：
10.1016/j.ast.2020.105819
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发表时间：
2020-05
影响因子：
5.6
通讯作者：
Zhu Junqiang
中科院分区：
文献类型：
--
作者：
Li Ziliang;Lu Xingen;Han Ge;Huang Enliang;Yang Chengwu;Zhu Junqiang
离心压缩机串列叶轮技术的研究还没有系统地进行，仍然是不完整的。对具有不同双锥流路轮廓的串列叶轮之间的流动结构变化缺乏了解被认为是造成混淆的主要原因。根据一系列具有不同叶轮几何形状的高速压气机级的详细数值研究，分析了二次流模式，以确定叶轮流动均匀性改善的基本物理特性，这是串联方法的主要潜在优势。叶轮进口/出口半径比D 1 t/D 2对于产生上级串联叶轮应用至关重要。在D1 t/D2为0.65-0.75的范围内，由于叶轮流态的合理调整，压气机效率提高了1.5%。在此最佳范围外，叶轮出口流动均匀性不会得到明显改善，甚至会降低。在最佳D 1 t/D 2范围内，使用带和不带串列叶轮的离心压缩机获得的实验结果进一步证明了使用串列叶轮方法获得的性能增益。该研究为串列叶轮技术的应用和未来先进离心压缩机的设计提供了有价值的参考。
The research on tandem impeller technology for centrifugal compressors has not been conducted in a systematic manner and remains incomplete. The lack of insight regarding the flow structure variations between tandem impellers with different meridional flow path profiles is considered to be the primary reason for the confusion. According to a detailed numerical investigation of a series of high-speed compressor stages with different impeller geometries, the secondary flow patterns were analyzed to determine the underlying physics of the impeller flow uniformity improvement, which is the main potential advantage of the tandem method. The impeller inlet/outlet radius ratio D 1 t/D 2 is critical to producing a superior tandem impeller application. The optimum D 1 t/D 2 range of 0.65–0.75 provided the maximum compressor efficiency gain of 1.5% due to the appropriate rearrangement of the impeller flow pattern. Outside of this optimum range, the impeller discharge flow uniformity could not be improved obviously and may even be reduced. The experimental results that were obtained by using centrifugal compressors with and without tandem impellers within the optimum D 1 t/D 2 range further demonstrate the performance gains achieved using the tandem impeller method. This study provides a valuable reference for tandem impeller technology applications and future advanced centrifugal compressor designs.
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影响因子：
2
作者：
G. D. Davis
通讯作者：
G. D. Davis
影响因子：
5.6
作者：
Sang-Bum Ma;Kwang‐Yong Kim
通讯作者：
Sang-Bum Ma;Kwang‐Yong Kim
影响因子：
1.7
作者：
D. A. Roberts;S. C. Kacker
通讯作者：
D. A. Roberts;S. C. Kacker
DOI：
10.1115/gt2009-59808
发表时间：
2009
期刊：
--
影响因子：
--
作者：
J. Bourgeois;R. Martinuzzi;D. A. Roberts;E. Savory;C. Zhang
通讯作者：
J. Bourgeois;R. Martinuzzi;D. A. Roberts;E. Savory;C. Zhang
影响因子：
3.3
作者：
A. Nishida
通讯作者：
A. Nishida