| 突然开始旋转的圆盘上的三维非定常边界层 |
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| 引用本文： | 陈允明.突然开始旋转的圆盘上的三维非定常边界层[J].应用数学和力学,1985,6(10):901-904. |
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| 作者姓名： | 陈允明 |
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| 作者单位： | 力学研究所 |
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| 摘 要： | 本文研究突然以常角速度ω开始旋转的圆盘上的三维非定常边界层.先求级数展开再用隐式差分把它延拓,得出了从ωt=0时的涡线扩散连续过渡到Kármán定常解的完整解答.最后给出了力矩系数cM,来流速度w(∞),物面流线倾角随时间ωt的变化以及与实验点的比较.
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| 收稿时间： | 1984-08-26 |
The Three-Dimensional Unsteady Boundary Layer over an Impulsively Started Rotating Disk |
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| Institution: | Institute of Mechanics, Chinese Academy of Sciences, Beijing |
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| Abstract: | The unsteady boundary layer over an impulsively started rotating disk is studied, a complete solution describing the smooth transition from vortex diffusion at ωt=0 to Kármán's steady solution is obtained by series expansion and its numerical continuation. The angle of body streamlines, together with experimental values, are given as the function of time t as well as the moment coefficient CM and on-coming velocity ω(∞). |
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