| 动态结冰孔隙结构三维建模方法 |
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| 引用本文： | 李伟斌,宋超,易贤,马洪林,杜雁霞.动态结冰孔隙结构三维建模方法[J].化工学报,2020,71(3):1009-1017. |
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| 作者姓名： | 李伟斌 宋超 易贤 马洪林 杜雁霞 |
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| 作者单位： | 1. 中国空气动力研究与发展中心计算空气动力研究所，四川 绵阳 621000;2. 中国空气动力研究与发展中心 飞行器结冰与防除冰重点实验室，四川 绵阳 621000 |
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| 基金项目： | 国家重点研发计划;国家自然科学基金 |
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| 摘 要： | 动态结冰内部呈现多孔结构特点，这一微观孔隙结构是影响其宏观物性的关键因素，然而传统方法难以对三维孔隙结构进行定量表征。为了客观刻画结冰微观结构特征，提出了基于结冰二维图像定量信息的三维微观结构建模方法。首先，研究并确定了真实结冰尺寸与建模区域之间的比例关系，分析比例尺对分辨率和建模的影响；其次，结合二维孔隙率和孔径分布函数，提出了三维孔隙数量及其孔径的推导方法，并给定了孔隙位置随机生成方法；基于此，最终建立了以0-1矩阵形式表征结冰三维微观孔隙结构的方法。实验表明，所生成三维结冰模型的二维孔隙定量信息与实验结果吻合度较高，建模方法准确可行，为动态结冰三维刻画、微观特征参数提取和相关微观仿真模拟提供了新途径。
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| 关 键 词： | 动态结冰 孔隙结构 孔隙率 孔径分布 定量分析 |
| 收稿时间： | 2019-04-08 |
| 修稿时间： | 2019-09-27 |
3-D modeling method of porous structure for dynamic icing |
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| LI Weibin,SONG Chao,YI Xian,MA Honglin,DU Yanxia.3-D modeling method of porous structure for dynamic icing[J].Journal of Chemical Industry and Engineering(China),2020,71(3):1009-1017. |
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| Authors: | LI Weibin SONG Chao YI Xian MA Honglin DU Yanxia |
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| Affiliation: | 1. Computational Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, Sichuan, China;2. Key Laboratory of Aircraft Icing and Anti/De-Icing, China Aerodynamics Research and Development Center, Mianyang 621000, Sichuan, China |
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| Abstract: | The dynamic icing presents a porous structure. This microscopic pore structure is a key factor affecting its macroscopic physical properties. However, it is difficult to quantitatively characterize the three-dimensional pore structure with traditional methods. Aimed to describe the microcosmic characters objectively, a 3-D modeling approach of porous structure based on quantitative results of 2-D images is proposed in this paper. Firstly, the ratio of measuring scale between real and modeling size is studied and given, and its influence on resolution and modeling is also analyzed. Secondly, based on the porosity and diameter distribution, method to determine the amount and diameters of pores is presented. And the random approach of pores location is given. After these preparations, the 3-D porous structure of ice is formed by a matrix with element value 0 or 1. The experimental results demonstrate that the 2-D quantitative information of pores extracted from 3-D generated ice is highly similar to the real ice, which shows that the proposed approach is accurate and feasible. Through this paper, a new way to 3-D display, characters extraction and corresponding simulation of ice in microcosmic view can be provided. |
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| Keywords: | dynamic icing porous structure porosity pore diameter distribution quantitative analysis |
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