不凝结气体对蒸汽浸没射流压力振荡的影响
发布时间:2018-01-20 20:00
本文关键词: 蒸汽浸没射流 不凝结气体 压力振荡强度 振荡频率 出处:《中国科学院大学学报》2017年02期 论文类型:期刊论文
【摘要】:通过实验研究不凝结气体(空气)对蒸汽浸没射流压力振荡特性的影响。结果表明:不凝结气体存在时压力振荡强度比纯蒸汽浸没射流时明显减小。随空气质量分数的增加,压力振荡峰值的位置沿轴向后移。过冷水温低于45℃时,峰值随空气质量分数的增加而增大;高于50℃时,随空气质量分数的增加而减小;水温在45~50℃之间时,峰值大致相同。压力振荡主频随空气质量分数、蒸汽质量流率和过冷水温度的增加而减小。
[Abstract]:Experimental study of uncondensed gases (air). The results show that the pressure oscillation intensity in the absence of condensate gas is significantly lower than that in pure steam immersion jet, and the pressure oscillation intensity decreases with the increase of air mass fraction. The position of the peak value of the pressure oscillation moves backward along the axial direction. When the temperature of the supercooled water is lower than 45 鈩,
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