本文对蒸汽射流中汽水直接接触凝结引起的压力振荡强度进行了实验研究.实验采用8 mm音速喷嘴,蒸汽质量流率512～865 kg/(m2.s),冷却水温度20～55℃.实验观察到渐缩形、膨胀-收缩形、双膨胀-收缩形和双膨胀-发散形四种典型汽羽形状,给出了汽羽周围空间平均压力脉冲分布图以及平均压力脉冲随冷却水温度、蒸汽质量流率的变化规律.实验结果表明,随着冷却水温度升高,平均压力脉冲曲线呈上升趋势,随着蒸汽质量流率的增加,在喷嘴出口附近平均压力脉冲增大,在远离喷嘴出口处平均压力脉冲基本保持不变.
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