| 壁面结构对非定常薄膜流动表面波特性的影响 |
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| 引用本文： | 朴明日,胡国辉.壁面结构对非定常薄膜流动表面波特性的影响[J].计算物理,2011,28(6):843-852. |
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| 作者姓名： | 朴明日 胡国辉 |
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| 作者单位： | 上海大学上海市应用数学和力学研究所,上海市力学在能源工程中的应用重点实验室,上海200072 |
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| 基金项目： | 国家自然科学基金(10872122); 教育部长江学者创新团队(IRT0844);教育部博士点基金(20103108110004); 上海市科委重大项目(10dz2212600)资助项目 |
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| 摘 要： | 采用VOF方法,在入口处引入周期扰动,对沿矩形结构底板下落的二维非定常薄膜流动进行直接数值模拟.计算结果表明,不同频率的外加周期扰动在流场中激发出不同波长的自由表面波.当壁面结构的波长与之相比较小时,由于壁面结构引起的静态波骑行在外加扰动形成的行进波上.若这两个波长相近,非线性效应将促进附近的表面波之间的合并.当薄膜无...
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| 关 键 词： | 薄膜流动 表面波 VOF方法 |
Influences of Wall Topography on Unsteady Free Surface Waves in Film Flow |
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| PAK Myong-II,HU Guohui.Influences of Wall Topography on Unsteady Free Surface Waves in Film Flow[J].Chinese Journal of Computational Physics,2011,28(6):843-852. |
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| Authors: | PAK Myong-II HU Guohui |
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| Institution: | PAK Myong-Il,HU Guohui(Shanghai Institute of Applied Mathematics and Mechanics,Shanghai University,Shanghai Key Laboratory of Mechanics in Energy and Environment Engineering,Shanghai 200072,China) |
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| Abstract: | Two-dimensional unsteady falling film flows,with periodic perturbations at inlet,along a substrate with rectangular corrugations are studied numerically by using VOF method.It indicates that imposed periodic perturbations with different frequencies induce traveling surface waves with different wavelengths.As wavelength of structured wall is relatively short,it is found that the static deformed waves due to corrugations ride on the progressive wave resulted from imposed external perturbations.If these two wa... |
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| Keywords: | film flow surface wave VOF method |
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