Experimental Investigation on Nonlinear Flow Anisotropy Behavior in Fracture Media
A series of flow experiments were performed on matched fractures to study the problem of non-Darcy flow in fractured media. Five rock fractures of different roughness were generated using indirect tensile tests, and their surface topographies were measured using a stereo topometric scanning system....
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2019/5874849 |
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| _version_ | 1832548129192280064 |
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| author | Chun Zhu Xiaoding Xu Xiuting Wang Feng Xiong Zhigang Tao Yun Lin Jing Chen |
| author_facet | Chun Zhu Xiaoding Xu Xiuting Wang Feng Xiong Zhigang Tao Yun Lin Jing Chen |
| author_sort | Chun Zhu |
| collection | DOAJ |
| description | A series of flow experiments were performed on matched fractures to study the problem of non-Darcy flow in fractured media. Five rock fractures of different roughness were generated using indirect tensile tests, and their surface topographies were measured using a stereo topometric scanning system. The fracture was assumed to be a self-affine surface, and its roughness and anisotropy were quantified by the fractal dimension. According to the flow tortuosity effect, the nonlinear flow was characterized by hydraulic tortuosity and surface tortuosity power law relationships based on Forchheimer’s law. Fracture seepage experiments conducted with two injection directions (0° and 90°) showed that Forchheimer’s law described the nonlinear flow well. Both the proposed model and Chen’s double-parameter model gave similar results to the experiment, but the match was closer with the proposed model. On this basis, a new formula for the critical Reynolds number is proposed, which serves to distinguish linear flow and Forchheimer flow. |
| format | Article |
| id | doaj-art-80a3c46734464630bccb834950b17231 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-80a3c46734464630bccb834950b172312025-02-03T06:42:10ZengWileyGeofluids1468-81151468-81232019-01-01201910.1155/2019/58748495874849Experimental Investigation on Nonlinear Flow Anisotropy Behavior in Fracture MediaChun Zhu0Xiaoding Xu1Xiuting Wang2Feng Xiong3Zhigang Tao4Yun Lin5Jing Chen6College of Construction Engineering, Jilin University, Changchun 130026, ChinaCollege of Construction Engineering, Jilin University, Changchun 130026, ChinaSchool of Civil, Environmental and Mining Engineering, The University of Adelaide, Adelaide, SA 5005, AustraliaSchool of Civil, Environmental and Mining Engineering, The University of Adelaide, Adelaide, SA 5005, AustraliaState Key Laboratory for Geomechanics & Deep Underground Engineering Beijing, China University of Mining & Technology, Beijing 100083, ChinaSchool of Civil, Environmental and Mining Engineering, The University of Adelaide, Adelaide, SA 5005, AustraliaState Key Laboratory for Geomechanics & Deep Underground Engineering Beijing, China University of Mining & Technology, Beijing 100083, ChinaA series of flow experiments were performed on matched fractures to study the problem of non-Darcy flow in fractured media. Five rock fractures of different roughness were generated using indirect tensile tests, and their surface topographies were measured using a stereo topometric scanning system. The fracture was assumed to be a self-affine surface, and its roughness and anisotropy were quantified by the fractal dimension. According to the flow tortuosity effect, the nonlinear flow was characterized by hydraulic tortuosity and surface tortuosity power law relationships based on Forchheimer’s law. Fracture seepage experiments conducted with two injection directions (0° and 90°) showed that Forchheimer’s law described the nonlinear flow well. Both the proposed model and Chen’s double-parameter model gave similar results to the experiment, but the match was closer with the proposed model. On this basis, a new formula for the critical Reynolds number is proposed, which serves to distinguish linear flow and Forchheimer flow.http://dx.doi.org/10.1155/2019/5874849 |
| spellingShingle | Chun Zhu Xiaoding Xu Xiuting Wang Feng Xiong Zhigang Tao Yun Lin Jing Chen Experimental Investigation on Nonlinear Flow Anisotropy Behavior in Fracture Media Geofluids |
| title | Experimental Investigation on Nonlinear Flow Anisotropy Behavior in Fracture Media |
| title_full | Experimental Investigation on Nonlinear Flow Anisotropy Behavior in Fracture Media |
| title_fullStr | Experimental Investigation on Nonlinear Flow Anisotropy Behavior in Fracture Media |
| title_full_unstemmed | Experimental Investigation on Nonlinear Flow Anisotropy Behavior in Fracture Media |
| title_short | Experimental Investigation on Nonlinear Flow Anisotropy Behavior in Fracture Media |
| title_sort | experimental investigation on nonlinear flow anisotropy behavior in fracture media |
| url | http://dx.doi.org/10.1155/2019/5874849 |
| work_keys_str_mv | AT chunzhu experimentalinvestigationonnonlinearflowanisotropybehaviorinfracturemedia AT xiaodingxu experimentalinvestigationonnonlinearflowanisotropybehaviorinfracturemedia AT xiutingwang experimentalinvestigationonnonlinearflowanisotropybehaviorinfracturemedia AT fengxiong experimentalinvestigationonnonlinearflowanisotropybehaviorinfracturemedia AT zhigangtao experimentalinvestigationonnonlinearflowanisotropybehaviorinfracturemedia AT yunlin experimentalinvestigationonnonlinearflowanisotropybehaviorinfracturemedia AT jingchen experimentalinvestigationonnonlinearflowanisotropybehaviorinfracturemedia |