Convective thermal cloaks with homogeneous and isotropic parameters and drag-free characteristics for viscous potential flows
Summary: Although convective thermal cloaking has been advanced significantly, the majority of related researches have concentrated on creeping viscous potential flows. Here, we consider convective thermal cloaking works in non-creeping viscous potential flows, and propose a combination of the separ...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-11-01
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| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004222017333 |
| _version_ | 1798019138281537536 |
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| author | Nengzhi Yao Hao Wang Bin Wang Xuesheng Wang Jiping Huang |
| author_facet | Nengzhi Yao Hao Wang Bin Wang Xuesheng Wang Jiping Huang |
| author_sort | Nengzhi Yao |
| collection | DOAJ |
| description | Summary: Although convective thermal cloaking has been advanced significantly, the majority of related researches have concentrated on creeping viscous potential flows. Here, we consider convective thermal cloaking works in non-creeping viscous potential flows, and propose a combination of the separation of variables method and the equivalent-medium integral method to analytically deduce the parameters of convective thermal cloaks with isotropic-homogeneous dynamic viscosity and thermal conductivity. Through numerical simulation, we demonstrate the cloaks can hide the object from thermo-hydrodynamic fields. Besides, by comparing the drag force cloaks bear in cloak case and the objects bear in object-existent case, we find convective thermal cloaks can considerably reduce the drag force, which appears drag-free characteristics. Finally, it is our hope that these developed methods can reduce the difficulties of metadevices fabrications, promote the development of drag reduction technology under higher Reynolds number, and shed light on the control of other multi-physics systems. |
| first_indexed | 2024-04-11T16:35:54Z |
| format | Article |
| id | doaj.art-62a74968bca04ff2928cdbe3f07ed53e |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-04-11T16:35:54Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-62a74968bca04ff2928cdbe3f07ed53e2022-12-22T04:13:49ZengElsevieriScience2589-00422022-11-012511105461Convective thermal cloaks with homogeneous and isotropic parameters and drag-free characteristics for viscous potential flowsNengzhi Yao0Hao Wang1Bin Wang2Xuesheng Wang3Jiping Huang4School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, ChinaSchool of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, ChinaSchool of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China; Corresponding authorSchool of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China; Corresponding authorDepartment of Physics, State Key Laboratory of Surface Physics, and Key Laboratory of Micro and Nano Photonic Structure (MOE), Fudan University, Shanghai 200438, China; Corresponding authorSummary: Although convective thermal cloaking has been advanced significantly, the majority of related researches have concentrated on creeping viscous potential flows. Here, we consider convective thermal cloaking works in non-creeping viscous potential flows, and propose a combination of the separation of variables method and the equivalent-medium integral method to analytically deduce the parameters of convective thermal cloaks with isotropic-homogeneous dynamic viscosity and thermal conductivity. Through numerical simulation, we demonstrate the cloaks can hide the object from thermo-hydrodynamic fields. Besides, by comparing the drag force cloaks bear in cloak case and the objects bear in object-existent case, we find convective thermal cloaks can considerably reduce the drag force, which appears drag-free characteristics. Finally, it is our hope that these developed methods can reduce the difficulties of metadevices fabrications, promote the development of drag reduction technology under higher Reynolds number, and shed light on the control of other multi-physics systems.http://www.sciencedirect.com/science/article/pii/S2589004222017333Thermal engineeringThermal propertyMetamaterials |
| spellingShingle | Nengzhi Yao Hao Wang Bin Wang Xuesheng Wang Jiping Huang Convective thermal cloaks with homogeneous and isotropic parameters and drag-free characteristics for viscous potential flows iScience Thermal engineering Thermal property Metamaterials |
| title | Convective thermal cloaks with homogeneous and isotropic parameters and drag-free characteristics for viscous potential flows |
| title_full | Convective thermal cloaks with homogeneous and isotropic parameters and drag-free characteristics for viscous potential flows |
| title_fullStr | Convective thermal cloaks with homogeneous and isotropic parameters and drag-free characteristics for viscous potential flows |
| title_full_unstemmed | Convective thermal cloaks with homogeneous and isotropic parameters and drag-free characteristics for viscous potential flows |
| title_short | Convective thermal cloaks with homogeneous and isotropic parameters and drag-free characteristics for viscous potential flows |
| title_sort | convective thermal cloaks with homogeneous and isotropic parameters and drag free characteristics for viscous potential flows |
| topic | Thermal engineering Thermal property Metamaterials |
| url | http://www.sciencedirect.com/science/article/pii/S2589004222017333 |
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