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Convective thermal cloaks with homogeneous and isotropic parameters and drag-free characteristics for viscous potential flows
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...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9663906/ https://www.ncbi.nlm.nih.gov/pubmed/36388976 http://dx.doi.org/10.1016/j.isci.2022.105461 |
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author | Yao, Nengzhi Wang, Hao Wang, Bin Wang, Xuesheng Huang, Jiping |
author_facet | Yao, Nengzhi Wang, Hao Wang, Bin Wang, Xuesheng Huang, Jiping |
author_sort | Yao, Nengzhi |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-9663906 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-96639062022-11-15 Convective thermal cloaks with homogeneous and isotropic parameters and drag-free characteristics for viscous potential flows Yao, Nengzhi Wang, Hao Wang, Bin Wang, Xuesheng Huang, Jiping iScience Article 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. Elsevier 2022-10-29 /pmc/articles/PMC9663906/ /pubmed/36388976 http://dx.doi.org/10.1016/j.isci.2022.105461 Text en © 2022 The Author(s) https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Article Yao, Nengzhi Wang, Hao Wang, Bin Wang, Xuesheng Huang, Jiping Convective thermal cloaks with homogeneous and isotropic parameters and drag-free characteristics for viscous potential flows |
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 | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9663906/ https://www.ncbi.nlm.nih.gov/pubmed/36388976 http://dx.doi.org/10.1016/j.isci.2022.105461 |
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