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中文摘要：
对环周进汽型的变截面通道内超声速汽液两相流升压装置进行了实验及理论研究,实验中进汽压力为0.15～0.4MPa,进水压力为0.2～0.6 MPa。实验结果表明在不同的汽水参数条件下,混合腔内压力与温度分布呈现出相似的规律。在同一工况下,激波前混合腔内各点的压力基本保持不变,随着凝结激波的产生,压力突然增大。激波过程中蒸汽几乎全部凝结,激波过后温度分布趋于平缓。并在实验结果的基础上分别建立了水喷嘴、蒸汽喷嘴、混合腔内两相区和扩散段的数学模型,其预测的装置出口压与实验值之间的误差小于15%。
英文摘要：
Steam injector with central steam nozzle arrangement is investigated experimentally and theoretically.The inlet steam and water pressure are in the range of 0.15-0.4 MPa and 0.2-0.6 MPa,respectively.The results indicate that pressure and temperature distributions along the mixing chamber are similar under different conditions.The pressure distributions before the shockwave keep the same,but the pressure is urgently increased after the shockwave.Due to the shockwave,the steam condensed almost entirely and the temperature distributions shift from abruptness to plainness. Mathematical model of water nozzle,steam nozzle,two-phase region and diffuser are created and the calculated values of discharge water pressure agree with the experiment data within 15%.
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