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基于非结构重叠网格的螺旋桨滑流非定常数值模拟

龚小权 马明生 张健 周乃春

龚小权, 马明生, 张健, 周乃春. 基于非结构重叠网格的螺旋桨滑流非定常数值模拟[J]. 航空动力学报, 2018, 33(2): 345-354. doi: 10.13224/j.cnki.jasp.2018.02.012
引用本文: 龚小权, 马明生, 张健, 周乃春. 基于非结构重叠网格的螺旋桨滑流非定常数值模拟[J]. 航空动力学报, 2018, 33(2): 345-354. doi: 10.13224/j.cnki.jasp.2018.02.012
Unsteady numerical simulation of propeller slipstream based on unstructured chimera grid[J]. Journal of Aerospace Power, 2018, 33(2): 345-354. doi: 10.13224/j.cnki.jasp.2018.02.012
Citation: Unsteady numerical simulation of propeller slipstream based on unstructured chimera grid[J]. Journal of Aerospace Power, 2018, 33(2): 345-354. doi: 10.13224/j.cnki.jasp.2018.02.012

基于非结构重叠网格的螺旋桨滑流非定常数值模拟

doi: 10.13224/j.cnki.jasp.2018.02.012

Unsteady numerical simulation of propeller slipstream based on unstructured chimera grid

  • 摘要: 基于各向异性非结构混合网格及多套网格重叠技术,通过求解非定常雷诺平均Navier-Stokes(URANS)方程,分别研究了螺旋桨动力特性和螺旋桨滑流对涡桨飞机气动特性影响。运用物面相交准则实现多套网格间的挖洞,采用距离权和三线性插值技术传递重叠区变量信息,并针对定轴旋转优化了网格重叠边界。采用双时间步求解控制方程,内迭代计算采用LU-SGS(lower-upper symmetric Gauss-Seidel)方法。模拟了单独螺旋桨旋转的非定常流动,计算的拉力系数和扭矩系数与试验结果一致,表明采用的数值方法和网格技术能有效模拟螺旋桨滑流效应。数值模拟了某涡桨飞机,对比了有无滑流下飞机的气动特性,给出了滑流对飞机影响。结果表明:滑流导致其后部气流加速和旋转,改变飞机气动特性,增大飞机的阻力和俯仰力矩,导致气流下洗,影响机翼及平尾压力分布。

     

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出版历程
  • 收稿日期:  2016-07-20
  • 刊出日期:  2018-02-28

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