Effects of phase relative motion on critical bubbly flows through a converging-diverging nozzle
Effects of phase relative motion on critical bubbly flows through a converging-diverging nozzle
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DOI：
10.1063/1.1497372
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发表时间：
2002-08
影响因子：
4.6
通讯作者：
Yi Chun Wang;Ethan Chen
中科院分区：
文献类型：
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作者：
Yi Chun Wang;Ethan Chen
采用双流体模型研究了收缩-扩张喷管中的一维泡状流。气泡和液体之间的平移和径向相对运动相关联的影响被纳入。首先对亚音速情况进行了计算，计算结果与实验结果吻合较好。然后，该模型被应用到临界（或窒息）流的情况下，以前研究缪尔和Eichhorn。在他们的实验中，Muir和Eichhorn发现临界压力比（定义为在阻塞条件下喉部压力与喷嘴上游压力的比率）和质量流率比均质流理论更大。他们测量了相位之间的显著滑动，因此推测这是造成这些差异的原因。它表明，在本文中，相相对速度可以合理地预测（在实验的不确定性），使用本模型。预测的临界质量流率之间的良好协议…
One-dimensional bubbly flows through converging–diverging nozzles are investigated using a two-fluid model. Effects associated with both translational and radial relative motions between bubbles and liquid are incorporated. Calculation of a subsonic case is performed first and shows good agreement with experiments. The model is then applied to critical (or choked) flow situations studied previously by Muir and Eichhorn. In their experiments, Muir and Eichhorn found larger critical pressure ratios (which are defined as the ratios of the throat pressure to the pressure upstream of the nozzle under choked conditions) and mass flow rates than homogeneous flow theory. They measured significant slip between phases which, therefore, was speculated to be responsible for these discrepancies. It is demonstrated in this paper that the phase relative velocity can be predicted reasonably well (within the experimental uncertainty) using the present model. Excellent agreement between the predicted critical mass flow rat...