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首页> 外文期刊>Energy Equipment and Systems >Effect of impeller geometry on performance characteristics of centrifugal compressor
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Effect of impeller geometry on performance characteristics of centrifugal compressor

机译：叶轮几何形状对离心压缩机性能特征的影响

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Centrifugal Compressors play an essential role in oil, gas and petrochemical industries. Their extensive usage is due to their smooth operation and high reliability compared to other other compressor types. One of the main characteristics of these turbomachines is their performance curve, which is an important criterion for selecting the appropriate compressor for a desired working condition. In the presented article, the effect of impeller’s geometry on performance curve and other compressors characteristics is numerically investigated. The 3D CFD code is used to achieve the performance curves that are dedicated to each geometrical configuration. The results indicate that some of the selected geometrical parameters have a significant effect on performance curve margins. Increasing the shroud angle moves the surge point to the higher flow coefficients, while the pressure ratio remains constant and increasing the blade’s trailing edge angle, leads to increase in pressure ratio.
机译：离心压缩机在石油，天然气和石化行业中起着至关重要的作用。与其他压缩机类型相比，它们的平稳运行和高可靠性是其广泛使用的原因。这些涡轮机的主要特征之一是它们的性能曲线，这是为期望的工作条件选择合适的压缩机的重要标准。在本文中，通过数值研究了叶轮几何形状对性能曲线和其他压缩机特性的影响。 3D CFD代码用于获得专用于每种几何配置的性能曲线。结果表明，某些选定的几何参数对性能曲线的边距有重大影响。增大护罩角度可将喘振点移至较高的流量系数，而压力比保持恒定，而叶片的后缘角增大则导致压力比增加。

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