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首页> 外文期刊>Journal of visualization >Study of effervescent jet breakup under gas expansion disturbance
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Study of effervescent jet breakup under gas expansion disturbance

机译：气体膨胀扰动下泡腾射流破裂的研究

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摘要

Effervescent jet breakup-based gas expansion disturbance was studied by the combination of experiment and numerical methods. A transparent outside-in-type atomizer was used to observe both internal and external gas-liquid flow behavior. Effects of internal flow patterns and flow rates on gas expansion bulge were experimentally studied. Further analysis on the disturbance of gas expansion on jet breakup was conducted through the numerical method. The present work showed the results of gas expansion disturbance exiting under various internal flow regimes. Increasing gas-liquid flow rates enlarges spray angle and gas expansion bulge, decreases adjacent gas bulges' distance, and leads to a more stable spray. Detailed numerical results demonstrated that the gas expansion advancing jet breakup was enhanced by enlarging instantaneous gas volume and internal pressure. For efficient utilization of gas expansion potential energy, small bubble formation is suggested.
机译：通过实验和数值方法相结合的方法研究了基于泡腾射流破裂的气体膨胀扰动。使用透明的外入式雾化器观察内部和外部气液流动行为。实验研究了内部流动方式和流速对气体膨胀凸起的影响。通过数值方法进一步分析了气体膨胀对射流破裂的干扰。目前的工作表明了在各种内部流态下存在的气体膨胀扰动的结果。气液流速的增加会增大喷雾角度和气体膨胀隆起，减小相邻气体隆起的距离，并导致更稳定的喷雾。详细的数值结果表明，通过增加瞬时气体量和内部压力，可以使气体膨胀提前射流破裂。为了有效利用气体膨胀势能，建议形成小的气泡。

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