Abstract

The steam turbine exhaust contains large secondary droplets, and the droplets show an uneven distribution in space and time. It analyzes the change of resonant frequency and quality factor with different sizes and positions of droplets, and analyzes the influence on the steam wetness measurement. The results show that: when the size of resonant cavity is constant, the resonant frequency and quality factor are related to the size and location of water droplet. For the cylindrical cavity whose length is 40mm and radius is 30mm, when large droplet located in the ring (radius is 13.0mm) onxoyplane, it has great influence on wetness measurement, and the influence is greater with larger size of droplet.

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