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Citation:
　Ran Ren,Qiang Du,Guang Liu,et al.Numerical Simulation and Experimental Study of the Rotor-Stator Interaction of a Turbine Under Variable Flow Coefficients[J].Journal of Marine Science and Application,2025,(3):518-531.[doi:10.1007/s11804-024-00453-y]
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Numerical Simulation and Experimental Study of the Rotor-Stator Interaction of a Turbine Under Variable Flow Coefficients

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Title:
Numerical Simulation and Experimental Study of the Rotor-Stator Interaction of a Turbine Under Variable Flow Coefficients
Author(s):
Ran Ren;  Qiang Du;  Guang Liu;  Zengyan Lian;  Lei Xie;  Yifu Luo
Affilations:
Author(s):
Ran Ren;  Qiang Du;  Guang Liu;  Zengyan Lian;  Lei Xie;  Yifu Luo
Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, 100190, China
Keywords:
Rotor-stator interaction; Pressure field; Flow coefficients; Unsteady Reynolds-averaged Navier-Stokes modeling (URANS); Attack angle
分类号:
-
DOI:
10.1007/s11804-024-00453-y
Abstract:
Clarifying the gas ingestion mechanism in the turbine disc cavity of marine gas turbines is crucial for ensuring the normal operation of turbines. However, the ingestion is influenced by factors such as the rotational pumping effect, mainstream pressure asymmetry, rotor-stator interaction, and unsteady flow structures, complicating the flow. To investigate the impact of rotor-stator interaction on ingestion, this paper decouples the model to include only the mainstream. This research employs experiments and numerical simulations to examine the effects of varying the flow coefficient through changes in rotational speed and mainstream flow rate. The main objective is to understand the influence of different rotor-stator interactions on the mainstream pressure field, accompanied by mechanistic explanations. The findings reveal inconsistent effects of the two methods for changing the flow coefficient on the mainstream pressure field. Particularly, the pressure distribution on the vane side primarily depends on the mainstream flow rate, while the pressure on the blade side is influenced by the mainstream flow rate and the attack angle represented by the flow coefficient. A larger angle of attack angle can increase pressure on the blade side, even surpassing the pressure on the vane side. Assessing the degree of mainstream pressure unevenness solely based on the pressure difference on the vane side is insufficient. This research provides a basis for subsequent studies on the influence of coupled real turbine rotor-stator interaction on gas ingestion.

References:

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Memo

Memo:
Received date:2023-9-6;Accepted date:2024-1-17。
Foundation item:The authors wish to acknowledge the financial support of the National Natural Science Foundation Outstanding Youth Foundation (Grant No. 52122603), the National Science and Technology Major Project (J2019-III-0003-0046), and the cloud computing supported by the Beijing Super Cloud Computing Center.
Corresponding author:Qiang Du,E-mail:duqiang@iet.cn
Last Update: 2025-05-28