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运行工况的应用及进口导叶不同角度下不稳定流动特性分析

Application of operating scenarios and analysis of unstable flow characteristics at various angles of inlet guide vane.

作者信息

Son Yong-Jin, Yang Hyeon-Mo, Lee Kyoung-Yong, Yoon Joon Yong, Choi Young-Seok

机构信息

Industrial Energy R&D Department, Research Institute of Sustainable Development Technology, Korea Institute of Industrial Technology, 89 Yangdaegiro-gil, Ipjang-myeon, Seobuk-gu, Cheonan-si, 31056, Chungcheongnam-do, Republic of Korea.

Department of Mechanical Engineering, Hanyang University, Seoul, 133-791, Republic of Korea.

出版信息

Sci Rep. 2024 Sep 30;14(1):22684. doi: 10.1038/s41598-024-73436-2.

DOI:10.1038/s41598-024-73436-2
PMID:39349550
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11442605/
Abstract

In this study, we analyzed the performance characteristics of an axial flow pump with different angles of internally installed inlet guide vanes (IGVs). We predicted the pump's performance based on changes in the IGV angle and analyzed the impact of these angle variations on pump operation in the low-flow region. Additionally, we used real operational data from two sewage treatment plants to propose efficient operational scenarios. For turbulence flow analysis, the Reynolds-averaged Navier-Stokes equations were discretized based on the finite volume method. The grid formation was evaluated using the grid convergence index to select the optimal grid. Then, the internal flow was analyzed in detail through transient-state analysis. Through fast Fourier transform analysis, we confirmed that adjusting the IGV angle during pump operation in the low-flow region in response to load changes results in more stable operation compared with the existing method (valve control). Overall, our findings verified that energy reduction and efficient operation can be achieved through IGV angle adjustment compared with valve control.

摘要

在本研究中，我们分析了内部安装不同角度进口导叶（IGV）的轴流泵的性能特征。我们基于IGV角度的变化预测了泵的性能，并分析了这些角度变化对低流量区域泵运行的影响。此外，我们利用两个污水处理厂的实际运行数据提出了高效的运行方案。对于湍流分析，基于有限体积法对雷诺平均纳维-斯托克斯方程进行了离散化。使用网格收敛指数评估网格生成情况以选择最优网格。然后，通过瞬态分析详细分析了内部流动。通过快速傅里叶变换分析，我们证实，与现有方法（阀门控制）相比，在低流量区域泵运行期间响应负载变化调整IGV角度可实现更稳定的运行。总体而言，我们的研究结果证实，与阀门控制相比，通过调整IGV角度可实现节能和高效运行。

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本文引用的文献

1
Numerical study on the hydrodynamic performance and internal flow of an axial-flow pump with various inlet flow angles.不同进口流角下轴流泵水动力性能及内部流动的数值研究
Sci Rep. 2023 Dec 15;13(1):22303. doi: 10.1038/s41598-023-49671-4.
2
A computational study of the effects of inlet guide vanes on the performance of a centrifugal blood pump.进口导叶对离心式血泵性能影响的计算研究
Artif Organs. 2002 Jun;26(6):534-42. doi: 10.1046/j.1525-1594.2002.06917.x.