| 内管射流占优时轴对称共轴射流结构分析 |
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| 引用本文： | 周华,夏南.内管射流占优时轴对称共轴射流结构分析[J].航空动力学报,2009,24(4):746-752. |
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| 作者姓名： | 周华 夏南 |
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| 作者单位： | 1. 同济大学,航空航天与力学学院,上海,200092
2. 上海大学,应用数学和力学研究所,上海,200072 |
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| 基金项目： | 上海市重点学科建设项目资助(B302) |
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| 摘 要： | 以轴对称Reynolds-averaged Navier-Stokes(RANS)方程为控制方程模拟了内流占优条件下轴对称共轴喷嘴射流流场,并基于湍动能、速度和压强等流场参数的变化规律,将这类流场划分为交汇段、初始段和主流段等三个区段,给出三段流场的结构特征和流动机理,发现初始段内湍流动能大大低于单管射流,将导致共轴射流噪声低于单管射流;主流段内湍流动能则高于单管射流,将加强射流的掺混作用.将流量计算结果与试验结果进行了对比,证明使用的算法是有效的.
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| 关 键 词： | co-axial jet flow interaction acoustics mixing enhancement axisymmetric Reynolds-averaged Navier-Stokes（RANS） |
| 收稿时间： | 4/6/2008 3:58:09 PM |
| 修稿时间： | 9/21/2008 3:00:48 PM |
Analysis of the axisymmetric co-axial jet flow structure dominated by the inner jet |
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| ZHOU Hua and XIA Nan.Analysis of the axisymmetric co-axial jet flow structure dominated by the inner jet[J].Journal of Aerospace Power,2009,24(4):746-752. |
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| Authors: | ZHOU Hua and XIA Nan |
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| Institution: | 1.School of Aerospace Engineering and Mechanics;Tongji University;Shanghai 200092;China;2.Shanghai Institute of Applied Mathematics and Mechanics;Shanghai University;Shanghai 200072;China |
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| Abstract: | Using Reynolds-averaged Navier-Stokes(RANS) as governing equations,the axisymmetric co-axial jet flow fields were simulated and compared with single nozzle jets.Based on the change rule of the field parameters including the turbulent kinetic energy(k),velocity(v) and pressure(p),the co-axial jet flow field has been divided into joint section,primary section and main section.A detailed analysis of the characteristic and flow mechanism was also carried out herein.With analysis of the interaction between inner... |
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| Keywords: | coaxial jet flow interaction Axisymmetric RANS Acoustics Mixing Enhancement |
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