张建伟,阚延勇,董鑫,冯颖

• 1:沈阳化工大学机械与动力工程学院

摘要(Abstract)：

为了研究双组分层撞击流流场振荡特性，选用大涡模拟对反应器内流场进行分析，通过分析一次和二次撞击区域的运动情况，获得了不同进口雷诺数、不同喷嘴间距、喷嘴边界受限程度下撞击面偏斜振荡规律。结果表明，二次撞击后的轴向速度与径向速度分布呈双峰形式，轴向速度与径向速度随雷诺数的增大而增大。二次撞击面发生偏斜振荡，偏斜振荡周期随喷嘴间距增大而增大，随进口雷诺数增大而减小。喷嘴间距越小，偏斜振荡周期对喷嘴边界受限程度越敏感。基于数值模拟结果，得出偏斜振荡周期与各因素之间的无量纲关联式，关联式计算结果与数值模拟值吻合较好，可以很好地预测二次撞击偏斜振荡周期。

关键词(KeyWords)： 撞击流;二次撞击;偏斜振荡;振荡周期;大涡模拟

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(21476141);; 辽宁省兴辽英才计划(XLYC1808025);; 中央引导地方科技发展专项(2020JH6/10500051);; 沈阳市中青年科技人才项目(RC190323)

作者(Author): 张建伟,阚延勇,董鑫,冯颖

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