Study on the Characteristics of CO<sub>2</sub> Displacing Non-Newtonian Fluids
CO<sub>2</sub> displacement is a key technique that was examined through numerical methods in a 3D Hele–Shaw cell, with CO<sub>2</sub> as the displacing phase and shear-thinning fluids as the displaced phase. Without interfacial tension effects, the displacement shows branchi...
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MDPI AG
2025-07-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/13/7/300 |
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| author | Yu-Ting Wu Sung-Ki Lyu Zhen Qin Yanjun Qin Hua Qiao Bing Li |
| author_facet | Yu-Ting Wu Sung-Ki Lyu Zhen Qin Yanjun Qin Hua Qiao Bing Li |
| author_sort | Yu-Ting Wu |
| collection | DOAJ |
| description | CO<sub>2</sub> displacement is a key technique that was examined through numerical methods in a 3D Hele–Shaw cell, with CO<sub>2</sub> as the displacing phase and shear-thinning fluids as the displaced phase. Without interfacial tension effects, the displacement shows branching patterns forming two vertically symmetric fingers, regardless of whether the displacing fluid is air or CO<sub>2</sub>. Under CO<sub>2</sub> displacement, viscous fingering propagates farther and achieves higher displacement efficiency than air. Compared with air displacement, the finger advancing distance increases by 0.0035 m, and the displacement efficiency is 15.2% higher than that of air displacement. Shear-thinning behavior significantly influences the process; stronger shear thinning enhances interfacial stability and suppresses fingering. As the power-law index n increases (reducing shear thinning), the fingering length extends. Variations in interfacial tension reveal it notably affects fingering initiation and velocity in CO<sub>2</sub> displacement of non-Newtonian fluids, but has a weaker impact on fingering formation. Interfacial tension suppresses short-wavelength perturbations, critical to interface stability, jet breakup, and flows, informing applications like foam-assisted oil recovery and microfluidics. |
| format | Article |
| id | doaj-art-ec871721f2c74372b44a0aa29eaeb82b |
| institution | DOAJ |
| issn | 2075-4442 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj-art-ec871721f2c74372b44a0aa29eaeb82b2025-08-20T02:45:39ZengMDPI AGLubricants2075-44422025-07-0113730010.3390/lubricants13070300Study on the Characteristics of CO<sub>2</sub> Displacing Non-Newtonian FluidsYu-Ting Wu0Sung-Ki Lyu1Zhen Qin2Yanjun Qin3Hua Qiao4Bing Li5School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, ChinaDefense and Technology Convergence Institute, Gyeongsang National University, Jinju-si 52828, Republic of KoreaSchool of Mechanical Engineering, Nantong Institute of Technology, Nantong 226002, ChinaSchool of Mechanical Engineering, Shandong University of Technology, Zibo 255049, ChinaZhejiang Shuanghuan Driveline Co., Ltd., Hangzhou 310023, ChinaShandong Dayang Mining Equipment Co., Ltd., Jining 272300, ChinaCO<sub>2</sub> displacement is a key technique that was examined through numerical methods in a 3D Hele–Shaw cell, with CO<sub>2</sub> as the displacing phase and shear-thinning fluids as the displaced phase. Without interfacial tension effects, the displacement shows branching patterns forming two vertically symmetric fingers, regardless of whether the displacing fluid is air or CO<sub>2</sub>. Under CO<sub>2</sub> displacement, viscous fingering propagates farther and achieves higher displacement efficiency than air. Compared with air displacement, the finger advancing distance increases by 0.0035 m, and the displacement efficiency is 15.2% higher than that of air displacement. Shear-thinning behavior significantly influences the process; stronger shear thinning enhances interfacial stability and suppresses fingering. As the power-law index n increases (reducing shear thinning), the fingering length extends. Variations in interfacial tension reveal it notably affects fingering initiation and velocity in CO<sub>2</sub> displacement of non-Newtonian fluids, but has a weaker impact on fingering formation. Interfacial tension suppresses short-wavelength perturbations, critical to interface stability, jet breakup, and flows, informing applications like foam-assisted oil recovery and microfluidics.https://www.mdpi.com/2075-4442/13/7/300viscous fingeringnon-Newtonian fluidcarbon dioxideCFDVOF |
| spellingShingle | Yu-Ting Wu Sung-Ki Lyu Zhen Qin Yanjun Qin Hua Qiao Bing Li Study on the Characteristics of CO<sub>2</sub> Displacing Non-Newtonian Fluids Lubricants viscous fingering non-Newtonian fluid carbon dioxide CFD VOF |
| title | Study on the Characteristics of CO<sub>2</sub> Displacing Non-Newtonian Fluids |
| title_full | Study on the Characteristics of CO<sub>2</sub> Displacing Non-Newtonian Fluids |
| title_fullStr | Study on the Characteristics of CO<sub>2</sub> Displacing Non-Newtonian Fluids |
| title_full_unstemmed | Study on the Characteristics of CO<sub>2</sub> Displacing Non-Newtonian Fluids |
| title_short | Study on the Characteristics of CO<sub>2</sub> Displacing Non-Newtonian Fluids |
| title_sort | study on the characteristics of co sub 2 sub displacing non newtonian fluids |
| topic | viscous fingering non-Newtonian fluid carbon dioxide CFD VOF |
| url | https://www.mdpi.com/2075-4442/13/7/300 |
| work_keys_str_mv | AT yutingwu studyonthecharacteristicsofcosub2subdisplacingnonnewtonianfluids AT sungkilyu studyonthecharacteristicsofcosub2subdisplacingnonnewtonianfluids AT zhenqin studyonthecharacteristicsofcosub2subdisplacingnonnewtonianfluids AT yanjunqin studyonthecharacteristicsofcosub2subdisplacingnonnewtonianfluids AT huaqiao studyonthecharacteristicsofcosub2subdisplacingnonnewtonianfluids AT bingli studyonthecharacteristicsofcosub2subdisplacingnonnewtonianfluids |