| 小突片强化混合结构三维流场数值模拟 |
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| 引用本文： | 王强,额日其太,杨勇.小突片强化混合结构三维流场数值模拟[J].推进技术,2001,22(3):215-218. |
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| 作者姓名： | 王强 额日其太 杨勇 |
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| 作者单位： | 北京航空航天大学动力系, |
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| 摘 要： | 采用Roe通量差分分裂格式对带有小突片的轴对称收-扩喷管内外流场进行了数值模拟。小突片形状有三角形和梯形，数目为2个或4个，堵塞比为0.02，0.04和0.06，相对高度为0.08和0.16，安装角分别为120°，135°和150°。计算结果表明在喷管出口安装2个或4个小突片能使得喷管下游内外流掺混时间及掺混距离大为缩短，而对喷管的推力系数影响不大。采用小突片对于降低喷流噪声和抑制尾喷流红外辐射是非常有利的。
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| 关 键 词： | 小突片 射流喷管 喷射混合流 强化混合 三维流 数值仿真 飞机 发动机 |
| 文章编号： | 1001-4055（2001）03-0215-04 |
| 修稿时间： | 2000年9月4日 |
Numerical simulation on three dimensional nozzle flow field with tabs |
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| WANG Qiang,Eriqitai and YANG Yong.Numerical simulation on three dimensional nozzle flow field with tabs[J].Journal of Propulsion Technology,2001,22(3):215-218. |
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| Authors: | WANG Qiang Eriqitai and YANG Yong |
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| Institution: | Dept. of Jet Propulsion, Beijing Univ.of Aeronautics and Astronautics, Beijing 100083,China;Dept. of Jet Propulsion, Beijing Univ.of Aeronautics and Astronautics, Beijing 100083,China;Dept. of Jet Propulsion, Beijing Univ.of Aeronautics and Astronautics, Beijing 100083,China |
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| Abstract: | The Reynolds-averaged Navier-Stokes equations were solved numerically by Roe's flux difference splitting scheme for three-dimensional nozzle flow field with tabs. Several geometrical changes of tabs, such as tab shapes, areas, heights and azimuthal angles, are considered. Use of tabs clearly has significant potential to reduce supersonic jet noise and infrared radiation. |
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| Keywords: | Small tabs Jet nozzle Jet mixing flow Mixing enhancement Three dimensional flow Numerical simulation |
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