PSD Characteristics of Air-water Two-Phase Cross Flow Based on Pressure-difference Fluctuation Signal

摘要：

The alternating vortex will shed from the circular cylinder when air-water two-phase fluid flows across it, and the pressure-difference fluctuates in its two sides. The fast dynamic response pressure-difference sensor and the high speed and large capacity data acquisition system were used to measure the pressure-difference fluctuation signal in two sides of the circular cylinder, at three section void fractions α, 0, 0.05 and 0.1, and the vortex shedding PSD characteristics were got under the DFT transformation. The results showed that: within the experimental condition, the vortex shedding intensity will be weakened in two sides of the circular cylinder with the void fraction increasing, and at α reaching 0.1, the obvious wave peak has disappear in the PSD profile, and the random fluctuation appears.

关键词： Air-water two-phase cross flow Pressure-difference fluctuation signal Void fraction PSD characteristics

作者: Wenpeng Hong Yunlong Zhou Dong Deng

作者单位: Dept. of Power Engineering, North China Electric Power University, Baoding, 071003, china School of Energy and Mechanical Engineering, Northeast Dianli University, Jilin, 132012, China

会议类型: 国际会议

会议名称: 2007杭州国际动力工程会议(The International Conference on Power Engineering 2007)

会议地点: 杭州

会议语种:英文

在线出版日期: 2007-10-23（万方平台首次上网日期，不代表论文的发表时间）