| 流场速度和距离函数混合约束的流曲面重构方法 |
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| 引用本文： | 莫堃,尹周平.流场速度和距离函数混合约束的流曲面重构方法[J].现代制造工程,2011(2). |
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| 作者姓名： | 莫堃 尹周平 |
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| 作者单位： | 华中科技大学数字制造装备与技术国家重点实验室,武汉,430074 |
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| 基金项目： | 国家自然科学基金项目(50835004,50625516) |
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| 摘 要： | 用曲面重构实现流曲面建模是工程中的关键问题,现有的曲面重构方法只基于点云几何信息,重构曲面很难符合流体动力学定义,需要复杂的人工处理。在传统重构研究的基础上提出了结合流体速度和点云距离函数的优化模型,用曲面演化方法求解模型极值获得最终流曲面的方法。与现有方法相比,所提出的方法在保证重构几何精度的同时,可以使得重构曲面符合流线型造型的外形要求,尤其是点云中噪声、层叠和孔洞等缺陷的重构结果更为合理。应用实例和比较证明了该方法的有效性。
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| 关 键 词： | 流曲面 曲面重构 流体速度场 水平集方程 |
Stream surface reconstruction based on mixed constraints of fluid velocity and distance function |
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| MO Kun,YIN Zhou-ping.Stream surface reconstruction based on mixed constraints of fluid velocity and distance function[J].Modern Manufacturing Engineering,2011(2). |
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| Authors: | MO Kun YIN Zhou-ping |
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| Affiliation: | MO Kun,YIN Zhou-ping(State Key Laboratory of Digital Manufacturing Equipment and Technology,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | Stream surface modeling by surface reconstruction is a challenge work in industrial application.The known reconstruction methods based only on geometric information are difficult to obtain the resulting surface with the definition of fluid dynamics and need complicated artificial intervention.Proposes a novel reconstruction method for stream surface with the incorporation of fluid velocity and distance function.By solving the corresponding reconstruction model with level set equation,the stream surface is a... |
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| Keywords: | stream surface surface reconstruction fluid velocity field level set equation |
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