| 冲压增程炮弹流场数值仿真与分析 |
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| 引用本文： | 王筱蓉,姜根柱,周长省.冲压增程炮弹流场数值仿真与分析[J].固体火箭技术,2009,32(4). |
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| 作者姓名： | 王筱蓉 姜根柱 周长省 |
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| 作者单位： | 南京理工大学机械工程学院,南京,210094 |
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| 摘 要： | 建立了冲压增程炮弹的三维计算模型,采用Navier-Stokes理论对冲压增程炮弹进行三维流场数值仿真,给出并分析了不同攻角下炮弹的流场结构和各部分的阻力系数,并与试验数据进行了对比.结果表明,在非设计状态下的总阻力系数比设计状态下的要大.且随攻角的增加而升高,主要是由炮弹空腔及底部的阻力变化所引起的,仿真结果与试验结果吻合较好,对冲压增程炮弹总体设计具有参考作用.
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| 关 键 词： | 冲压增程炮弹 冲压发动机 数值仿真 攻角 |
Numerical simulation and analysis for flow field of ramjet-assisted projectile |
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| WANG Xiao-rong,JIANG Gen-zhu,ZHOU Chang-sheng.Numerical simulation and analysis for flow field of ramjet-assisted projectile[J].Journal of Solid Rocket Technology,2009,32(4). |
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| Authors: | WANG Xiao-rong JIANG Gen-zhu ZHOU Chang-sheng |
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| Institution: | School of mechanical engineering of NJUST;Nanjing 210094;China |
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| Abstract: | The three-dimensional computation model of solid ramjet rocket assisted projectile was established,and the 3D flow field of projectile was simulated by using Navier-Stokes equations.The flow field structure of projectile and the resistance coefficient of various regions at different angles of attack were analyzed.And also the numerical results were compared with the test data.The results show that the total resistance coefficient under off-design state is higher than that in design state,and it increases wi... |
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| Keywords: | ramjet-assisted projectile ramjet engine numerical simulation angle of attack |
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