| 斜切喷管欠膨胀超声速射流的数值模拟 |
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| 引用本文： | 乐贵高,马大为,李自勇,李志刚.斜切喷管欠膨胀超声速射流的数值模拟[J].推进技术,2003,24(3):225-227. |
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| 作者姓名： | 乐贵高 马大为 李自勇 李志刚 |
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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： | 采用三阶MUSCL TVD格式解三维可压缩平均雷诺纳维尔-斯托克斯方程组，湍流模型为Spalart-Allmaras代数模型，数值模拟了两种斜切角喷管在喷口压比为2.0，2．8，3．4和4．0条件下的欠膨胀超声速射流场，获得了射流场流谱和参数分布，计算结果和实验数据符合良好，并给出了喷管斜切角和喷口压强比与射流偏转角和扩张角的分布曲线。
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| 关 键 词： | 斜切喷管 超音速射流 纳维尔－斯托克斯方程 湍流模型 数值仿真 |
| 文章编号： | 1001-4055(2003)03-0225-03 |
| 修稿时间： | 2002年5月23日 |
Numerical simulation of underexpanded jet from inclined nozzles |
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| LE Gui-gao,MA Da-wei,LI Zi-yong and LI Zhi-gang.Numerical simulation of underexpanded jet from inclined nozzles[J].Journal of Propulsion Technology,2003,24(3):225-227. |
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| Authors: | LE Gui-gao MA Da-wei LI Zi-yong and LI Zhi-gang |
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| Institution: | School of Mechanical Engineering, Nanjing Univ. of Science and Technology, Nanjing 210094, China;School of Mechanical Engineering, Nanjing Univ. of Science and Technology, Nanjing 210094, China;School of Mechanical Engineering, Nanjing Univ. of Science and Technology, Nanjing 210094, China;School of Mechanical Engineering, Nanjing Univ. of Science and Technology, Nanjing 210094, China |
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| Abstract: | The three-dimensional compressible, Reynolds-averaged Navier-Stokes equations with Spalart-Allmaras algebraic turbulence model were solved using the third order accurate MUSCL type TVD (total variation diminishing) scheme. The underexpanded jets from inclined nozzle under two kinds of inclination angle and nozzle pressure ratios of 2.2, 2.8, 3.4 and 4.0 were simulated numerically. The jet flowfield and flow parameter distributions were obtained. The numerical results agree well with experimental data. The distribution curves of the inclination angle of nozzle exit plane and nozzle pressure ratios on the jet deflection angle and divergence angle were given as well. |
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| Keywords: | Inclined nozzle~+ Supersonic jet flow Navier-Stokes equation Turbulence model Numerical simulation |
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