基于扫描电镜的多孔介质迂曲度识别方法研究
尹婷婷1，王超1，张中标1，孙剑楠2，闫柯2
（1.中国核动力研究设计院，四川 成都 610213；2.西安交通大学 机械工程学院，陕西 西安 710049）
摘要：迂曲度是研究多孔介质渗流特性的重要参数，反映了流体流经多孔介质的迂回曲折程度。目前主要通过试验以及仪器测量间接获取多孔介质的迂曲度参数，存在实验人员主观性影响较大、测量计算方法不明确的问题。为此，基于多孔介质材料的扫描电镜图像，利用水平集原理分割了多孔介质材料的孔隙通道，并计算了流体在孔隙通道里的流线，通过数字化识别方法提取了多孔介质的迂曲度参数。最后通过压汞仪测量对应多孔介质材料的迂曲度参数与识别结果作对比，验证了本文计算迂曲度方法的正确性，为多孔介质迂曲度的计算提供一种新的求解思路。
关键词：多孔介质；水平集原理；迂曲度；扫描电镜
中图分类号：TU441+.33 文献标志码：A doi：10.3969/j.issn.1006-0316.2024.05.002
文章编号：1006-0316 (2024) 05-0011-06
Tortuosity Identification Method of Porous Media Based on Scanning Electron Microscope
YIN Tingting1，WANG Chao1，ZHANG Zhongbiao1，SUN Jiannan2，YAN Ke2
( 1. Nuclear Power Institute of China, Chengdu 610213, China; 2. School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China )
Abstract：Tortuosity is the key parameter to study the seepage characteristics of porous media, which reflects the tortuosity degree of the fluid flowing through the porous media. At present, the tortuosity parameters of porous media are mainly obtained indirectly by experiments and instrumental measurements, which have the problems of the subjective influence of the investigators on the experimenters and the unclear measurement and calculation methods. For this reason, on the basis of the scanning electron microscope images of porous media materials, this paper uses the level set principle to segment the pore channels of porous media materials and calculates the streamlines of the fluid in the pore channels, and extracts the tortuosity parameters of porous media through digital recognition methods. Finally, the tortuosity parameters of the corresponding porous media materials are measured by the mercury porosimeter are compared with the identification results to verify the correctness of the tortuosity calculation method in this paper, which provides a new solution idea for the calculation of the tortuosity of porous media.
Key words：porous media；level set principle；tortuosity；scanning electron microscope
———————————————
收稿日期：2022-05-20
基金项目：国家重点研发计划（2020YFB2007900）
作者简介：尹婷婷（1995－），女，四川资阳人，硕士，助理研究员，主要研究方向为核动力设备研发，E-mail：ytt183@126.com。
（1.中国核动力研究设计院，四川 成都 610213；2.西安交通大学 机械工程学院，陕西 西安 710049）
摘要：迂曲度是研究多孔介质渗流特性的重要参数，反映了流体流经多孔介质的迂回曲折程度。目前主要通过试验以及仪器测量间接获取多孔介质的迂曲度参数，存在实验人员主观性影响较大、测量计算方法不明确的问题。为此，基于多孔介质材料的扫描电镜图像，利用水平集原理分割了多孔介质材料的孔隙通道，并计算了流体在孔隙通道里的流线，通过数字化识别方法提取了多孔介质的迂曲度参数。最后通过压汞仪测量对应多孔介质材料的迂曲度参数与识别结果作对比，验证了本文计算迂曲度方法的正确性，为多孔介质迂曲度的计算提供一种新的求解思路。
关键词：多孔介质；水平集原理；迂曲度；扫描电镜
中图分类号：TU441+.33 文献标志码：A doi：10.3969/j.issn.1006-0316.2024.05.002
文章编号：1006-0316 (2024) 05-0011-06
Tortuosity Identification Method of Porous Media Based on Scanning Electron Microscope
YIN Tingting1，WANG Chao1，ZHANG Zhongbiao1，SUN Jiannan2，YAN Ke2
( 1. Nuclear Power Institute of China, Chengdu 610213, China; 2. School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China )
Abstract：Tortuosity is the key parameter to study the seepage characteristics of porous media, which reflects the tortuosity degree of the fluid flowing through the porous media. At present, the tortuosity parameters of porous media are mainly obtained indirectly by experiments and instrumental measurements, which have the problems of the subjective influence of the investigators on the experimenters and the unclear measurement and calculation methods. For this reason, on the basis of the scanning electron microscope images of porous media materials, this paper uses the level set principle to segment the pore channels of porous media materials and calculates the streamlines of the fluid in the pore channels, and extracts the tortuosity parameters of porous media through digital recognition methods. Finally, the tortuosity parameters of the corresponding porous media materials are measured by the mercury porosimeter are compared with the identification results to verify the correctness of the tortuosity calculation method in this paper, which provides a new solution idea for the calculation of the tortuosity of porous media.
Key words：porous media；level set principle；tortuosity；scanning electron microscope
———————————————
收稿日期：2022-05-20
基金项目：国家重点研发计划（2020YFB2007900）
作者简介：尹婷婷（1995－），女，四川资阳人，硕士，助理研究员，主要研究方向为核动力设备研发，E-mail：ytt183@126.com。
设为首页 | 加入收藏 | 免责条款
《机械》杂志版权所有 Copyright©2008-2012 Jixiezazhi.com All Rights Reserved
电话：028-85925070 传真：028-85925073 E-mail：jixie@vip.163.com
地址：四川省成都锦江工业开发区墨香路48号 邮编：610063
Powered by PageAdmin CMS