Numerical simulation for vibration of interferometric probein wet steam flow field

被引：0
|
作者：
Hu Z.-H. [1 ]
Feng J.-T. [1 ]
Sheng D.-R. [1 ]
Chen J.-H. [1 ]
Li W. [1 ]
机构：
[1] Institute of Thermal Science and Power System, Zhejiang University, Hangzhou
来源：
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2019年 / 53卷 / 06期
关键词：
Bidirectional fluid solid coupling technique; Interferometric probe; Numerical analysis; Two-phase wet steam flow field; Vibration characteristics;
D O I：
10.3785/j.issn.1008-973X.2019.06.015
中图分类号：
学科分类号：
摘要：
The bidirectional fluid solid coupling technique was adopted to analyze the three-element flow problem that the interferometric probe interacts with the wet steam flow field at the end stage of the steam turbine. The vibration characteristics and stress of the probe under wet steam flow field were studied. The fluid solid coupling model was built by using Workbench platform. The k-ω model based on turbulent shear stress transport was used to improve calculation accuracy. Results show that the vibration period of the three directions X, Y and Z of probe fluctuate slightly. The oscillation amplitudes in directions X, Y and Z were 0.28 mm, 4.75 μm and 5.50 μm, respectively. Due to the special structure of the optical probe, the pressure differential force acting on the tip of the probe is very small, leading to a decrease in the growth rate of the shape variable at the front end. During probe vibration, the maximum stress position of the probe is about 2/3 of the point in the direction of back flow of the probe, the maximum stress is far below the allowable stress of the probe material, and the resonance effect is not induced in the calculation condition. © 2019, Zhejiang University Press. All right reserved.
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页码：1157 / 1163
页数：6
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