Aluminum nitride–filled elastic silicone rubber composites for drag reduction
This study presents aluminum nitride/silicone rubber composite as a drag reduction material, inspired by the boundary heating drag reduction mechanism of dolphin skin. Aluminum nitride was added as a thermal conductive filler at weight fractions of 16.67, 21.05, and 28.57 wt% to pristine silicone ru...
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doaj-95394857b3734eda81ba6a20c57ca5cc2020-11-25T03:40:42ZengSAGE PublishingAdvances in Mechanical Engineering1687-81402017-04-01910.1177/1687814017697628Aluminum nitride–filled elastic silicone rubber composites for drag reductionLimei Tian0Yangjun Wang1E Jin2Yinwu Li3Runmao Wang4Yangeng Shang5Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, ChinaKey Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, ChinaKey Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, ChinaKey Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, ChinaInternational Society of Bionic Engineering Secretariat, Jilin University, Changchun, ChinaKey Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, ChinaThis study presents aluminum nitride/silicone rubber composite as a drag reduction material, inspired by the boundary heating drag reduction mechanism of dolphin skin. Aluminum nitride was added as a thermal conductive filler at weight fractions of 16.67, 21.05, and 28.57 wt% to pristine silicone rubber. Tests of the thermal conductivity and tensile properties showed that the thermal conductivity of all three aluminum nitride/silicone rubber composites were increased 27.9%, 41.4%, and 43.7% than that of the pristine silicone rubber, and the elastic modulus of the composites was increased with the aluminum nitride content. Droplet velocity testing, which can reflect the drag reduction mechanism of the heating boundary controlled by the aluminum nitride/silicone rubber composites, was performed between all three aluminum nitride/silicone rubber composites and pristine silicone rubber. The results showed that the droplet velocity of all three aluminum nitride/silicone rubber composites were higher than pristine silicone rubber, implying that the composites had a drag-reducing function. In terms of the drag-reducing mechanism, the heat conductivity performance of the aluminum nitride/silicone rubber accelerates the heat transfer between the aluminum nitride/silicone rubber composite surface and droplet. The forces between the molecules and droplet dynamic viscosity are reduced, which result in drag reduction. The application of aluminum nitride/silicone rubber composite to control fluid medium will have important value for fluid machinery.https://doi.org/10.1177/1687814017697628 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Limei Tian Yangjun Wang E Jin Yinwu Li Runmao Wang Yangeng Shang |
spellingShingle |
Limei Tian Yangjun Wang E Jin Yinwu Li Runmao Wang Yangeng Shang Aluminum nitride–filled elastic silicone rubber composites for drag reduction Advances in Mechanical Engineering |
author_facet |
Limei Tian Yangjun Wang E Jin Yinwu Li Runmao Wang Yangeng Shang |
author_sort |
Limei Tian |
title |
Aluminum nitride–filled elastic silicone rubber composites for drag reduction |
title_short |
Aluminum nitride–filled elastic silicone rubber composites for drag reduction |
title_full |
Aluminum nitride–filled elastic silicone rubber composites for drag reduction |
title_fullStr |
Aluminum nitride–filled elastic silicone rubber composites for drag reduction |
title_full_unstemmed |
Aluminum nitride–filled elastic silicone rubber composites for drag reduction |
title_sort |
aluminum nitride–filled elastic silicone rubber composites for drag reduction |
publisher |
SAGE Publishing |
series |
Advances in Mechanical Engineering |
issn |
1687-8140 |
publishDate |
2017-04-01 |
description |
This study presents aluminum nitride/silicone rubber composite as a drag reduction material, inspired by the boundary heating drag reduction mechanism of dolphin skin. Aluminum nitride was added as a thermal conductive filler at weight fractions of 16.67, 21.05, and 28.57 wt% to pristine silicone rubber. Tests of the thermal conductivity and tensile properties showed that the thermal conductivity of all three aluminum nitride/silicone rubber composites were increased 27.9%, 41.4%, and 43.7% than that of the pristine silicone rubber, and the elastic modulus of the composites was increased with the aluminum nitride content. Droplet velocity testing, which can reflect the drag reduction mechanism of the heating boundary controlled by the aluminum nitride/silicone rubber composites, was performed between all three aluminum nitride/silicone rubber composites and pristine silicone rubber. The results showed that the droplet velocity of all three aluminum nitride/silicone rubber composites were higher than pristine silicone rubber, implying that the composites had a drag-reducing function. In terms of the drag-reducing mechanism, the heat conductivity performance of the aluminum nitride/silicone rubber accelerates the heat transfer between the aluminum nitride/silicone rubber composite surface and droplet. The forces between the molecules and droplet dynamic viscosity are reduced, which result in drag reduction. The application of aluminum nitride/silicone rubber composite to control fluid medium will have important value for fluid machinery. |
url |
https://doi.org/10.1177/1687814017697628 |
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