PSD characteristics of air-water two-phase cross flow based on pressure-difference fluctuation signal

被引：0
|
作者：
Hong, Wenpeng [1 ]
Zhou, Yunlong [2 ]
Deng, Dong [2 ]
机构：
[1] North China Elect Power Univ, Dept Power Engn, Baoding 071003, Peoples R China
[2] Northeast Dianli Univ, Sch Energy & Mech Engn, Jilin, Jilin, Peoples R China
来源：
CHALLENGES OF POWER ENGINEERING AND ENVIRONMENT, VOLS 1 AND 2 | 2007年
关键词：
air-water two-phase cross flow; pressure-difference fluctuation signal; void fraction; PSD characteristics;
D O I：
10.1007/978-3-540-76694-0_176
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
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 alpha, 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 a reaching 0.1, the obvious wave peak has disappear in the PSD profile, and the random fluctuation appears.
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页码：950 / +
页数：3
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