| 间断有限元方法在弹尾超音速喷流计算中的应用 |
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| 引用本文： | 陈二云,马大为,乐贵高,李志刚,赵继永.间断有限元方法在弹尾超音速喷流计算中的应用[J].计算物理,2008,25(6). |
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| 作者姓名： | 陈二云 马大为 乐贵高 李志刚 赵继永 |
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| 作者单位： | 南京理工大学,机械工程学院,江苏,南京,210094 |
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| 摘 要： | 采用间断有限元方法对超音速无粘喷流流动进行数值模拟.将二维双曲守恒方程的间断有限元方法发展到轴对称Enler方程,并就某导弹尾部超音速伴随射流进行数值计算.计算结果与实验照片反映的流动特征吻合较好,与高精度、高分辨率TVD格式的计算结果相比,间断有限元方法的计算结果在轴线反射点附近具有较高的分辨率,表明该方法对激波具有较强的捕捉能力,在激波阵面上不会产生振荡或抹平间断现象.
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| 关 键 词： | 间断有限元方法 超音速喷流 数值模拟 |
Discontinuous Finite Element Method for Supersonic Flow of a Missile Propulsive Jet |
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| CHEN Eryun,MA Dawei,LE Guigao,LI Zhigang,ZHAO Jiyong.Discontinuous Finite Element Method for Supersonic Flow of a Missile Propulsive Jet[J].Chinese Journal of Computational Physics,2008,25(6). |
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| Authors: | CHEN Eryun MA Dawei LE Guigao LI Zhigang ZHAO Jiyong |
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| Abstract: | Supersonic inviscid flows in missile propulsive jet are simulated numerically with discontinuous finite element method based on two-dimensional conservation laws,which is developed to solve axisymmetric Euler equations.Computational results show good agreement with experimental data.The method shows higher resolution at discontinuous points compared with TVD schemes.It exhibits high capability in capturing shocks without numerical oscillation and artificial viscosity near discontinuous points. |
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| Keywords: | discontinuous finite element method supersonic flow numerical simulation |
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