Research on identification and quantification methods for loss sources of compressors

Liangye Liu, Weilin Yi*

*此作品的通讯作者

科研成果: 期刊稿件会议文章同行评审

摘要

A deep understanding of the internal loss mechanisms and specific values of turbomachinery is crucial for its design and analysis. In this paper, based on the theory of entropy production, the loss sources in the NASA Rotor67 transonic fan and Radiver centrifugal compressor were quantified by using numerical simulation methods and physical flow characteristic description methods. The proportion of losses in various regions was presented. The results show that in the transonic fan, boundary layer losses and wake losses account for more than 70%, while direct shock losses account for less than 2%. Additionally, as the mass flow increases, the losses gradually move downstream, with the proportion of wake losses increasing. Within the wake losses, the influence of tip leakage flow and corner separation flow exceeds 70%. In the centrifugal compressor, as the mass flow decreases, the proportion of impeller losses to the total stage losses increases significantly, from 21.7% at the choking condition to 63.5% near the design condition. Most of the losses within the impeller occur near the casing area, accounting for about 47% of the impeller losses. The areas near the blades and the main flow area are the other two major sources of impeller losses, with both contributing to 36% of the losses.

源语言英语
文章编号012044
期刊Journal of Physics: Conference Series
2882
1
DOI
出版状态已出版 - 2024
活动2024 International Conference on Aerospace and Mechanics, ICAM 2024 - Shenyang, 中国
期限: 12 7月 202414 7月 2024

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引用此

Liu, L., & Yi, W. (2024). Research on identification and quantification methods for loss sources of compressors. Journal of Physics: Conference Series, 2882(1), 文章 012044. https://doi.org/10.1088/1742-6596/2882/1/012044