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An Enhanced Midstream Design Method for Cryogenic Turbomachinery
Cryogenics ( IF 2.1 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.cryogenics.2020.103237
Mohananand M. Jadhav , Anindya Chakravarty , M.D. Atrey

Abstract An enhanced midstream design method for cryogenic turbomachines is presented in this article by reformulating that given by Hasselgruber and Balje. The enhanced formulation incorporates non-idealities such as turbomachinery inefficiency and flow angle deviation. Moreover, certain other issues faced by high speed cryogenic turbomachinery operating in low temperature domains, such as those arising due to gas property variations and impeller length shortening from rotordynamic considerations, have also been addressed. In the enhanced design method proposed in this article, to start with, graphical schedules of various flow and profile parameters are used to rectify the defects arising in the turbomachine profiles, followed by design accomplishment through blade loading specifications. The average blade loading is arrived at by incorporating effects of splitter blades and spanwise blade geometry. The effects of blockage due to blade thickness and splitter blades are also incorporated in the formulation. The proposed design method proceeds through a parametric study of the graphical schedules on the impeller profile followed by subsequent enhancement of the impeller geometry through a framed algorithmic procedure.

中文翻译:

一种增强的低温涡轮机械中游设计方法

摘要 本文通过对 Hasselgruber 和 Balje 给出的方法进行重新表述,提出了一种增强的低温涡轮机中游设计方法。增强的公式包含了非理想情况,例如涡轮机械效率低下和流动角度偏差。此外,还解决了在低温域中运行的高速低温涡轮机械所面临的某些其他问题,例如由于气体性质变化和转子动力学考虑导致叶轮长度缩短而引起的问题。在本文提出的增强设计方法中,首先使用各种流量和剖面参数的图形计划来纠正涡轮机剖面中出现的缺陷,然后通过叶片加载规范来完成设计。平均叶片载荷是通过结合分流叶片和展向叶片几何形状的影响得出的。由于叶片厚度和分流器叶片造成的堵塞影响也包含在配方中。所提出的设计方法通过对叶轮轮廓上的图形计划进行参数研究,然后通过框架算法程序对叶轮几何形状进行后续增强。
更新日期:2021-01-01
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