| 用粘性涡方法计算伞状物绕流 |
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| 引用本文： | 彭勇,宋旭民,秦子增.用粘性涡方法计算伞状物绕流[J].航天返回与遥感,2004,25(4):10-14. |
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| 作者姓名： | 彭勇 宋旭民 秦子增 |
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| 作者单位： | 国防科技大学航天与材料工程学院,长沙,410073;国防科技大学航天与材料工程学院,长沙,410073;国防科技大学航天与材料工程学院,长沙,410073 |
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| 摘 要： | 文章用粘性涡方法计算了二维伞状物绕流问题。首先阐述了涡方法的基本理论 ,包括涡元的对流、粘性扩散、物面涡元的脱落、物体所受气动力计算等 ,然后介绍了使用涡方法的一般步骤。最后将完全充满的伞衣简化为二维圆弧壳 ,计算了伞衣内外压力分布、阻力系数及升力系数
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| 关 键 词： | 流体动力学 降落伞 粘性涡方法 涡元对流 涡核扩散 涡元脱落 |
| 文章编号： | 1009-8518(2004)04-0010-05 |
| 修稿时间： | 2004年8月8日 |
Simulation of Flow Around a Parachute Shape by Viscous Vortex Method |
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| Peng Yong,Song Xumin,Qin Zizeng.Simulation of Flow Around a Parachute Shape by Viscous Vortex Method[J].Spacecraft Recovery & Remote Sensing,2004,25(4):10-14. |
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| Authors: | Peng Yong Song Xumin Qin Zizeng |
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| Abstract: | The time dependent viscous flow around a parachute shape is presented. First, the basic theory which includes vortex convection, viscous diffusion, vortex shedding, aerodynamic forces formulas are presented. Then, the steps to use vortex method are presented. Finally, according to modeling the parachute canopy as an arc-shell, the pressure on the canopy, the drag coefficient and the lift coefficient are calculated. |
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| Keywords: | Viscous vortex method Parachute Vortex convection Core expansion Vortex shedding |
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