喷孔雾化耦合数值模型研究

覃 炎忻
柳州职业技术大学

摘要


本文构建了一种将孔内流动和孔外雾化过程耦合的喷孔雾化模拟数值模型，并进行了包含球阀打开、保持、关闭的全过程动态模拟。将喷孔的几何因素造成的出口流场信息作为雾化模型的初始条件，结果表明，喷孔流量模拟值与实验值基本一致，在针阀打开初期，喷孔在偏近喷嘴中心轴的一侧区域的入口出，发生空化现象，随后在这一侧转变为挑流。模型能够预测在喷孔由于喷孔几何因素造成的雾化粒径和速度不均衡的现象。

关键词


耦合；雾化；喷孔；数值模拟

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参考


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