We recently showed theoretically that the infinite singularity of the thermal cloak designed by transformation thermodynamics could be eliminated by a new method—the path design of the heat flux without any approximation. In this paper, we present the experimental evidence of such a new strategy of thermal cloak, that is, a truly singularity-free thermal cloak. We fabricate such a transient thermal cloak device without using extreme material parameters. The experimental results show fully controlled, transient cloaking behavior, which are perfectly consistent with the theoretical derivations and simulated results. Since one can flexibly design the path of heat flux in the cloak, it has the large degree-of-freedom to construct thermal cloaks with the specific distributions of material parameters. The new method provides a new blue print for the transient thermal protection of a specific target.
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Research-Article
Experimental Evidence of the Thermal Cloak Based on the Path Design of the Heat Flux
Xiao He,
Xiao He
Key Laboratory of Advanced Ship
Materials and Mechanics,
College of Aerospace and
Civil Engineering,
Harbin Engineering University,
Harbin 150001, China
Materials and Mechanics,
College of Aerospace and
Civil Engineering,
Harbin Engineering University,
Harbin 150001, China
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Tianzhi Yang,
Tianzhi Yang
Faculty of Aerospace Engineering,
Shenyang Aerospace University,
Shenyang 110136, China
Shenyang Aerospace University,
Shenyang 110136, China
Search for other works by this author on:
Linzhi Wu
Linzhi Wu
Key Laboratory of Advanced Ship
Materials and Mechanics,
College of Aerospace and
Civil Engineering,
Harbin Engineering University,
Harbin 150001, China;
Materials and Mechanics,
College of Aerospace and
Civil Engineering,
Harbin Engineering University,
Harbin 150001, China;
Center for Composite Materials,
Harbin Institute of Technology,
Harbin 150001, China
e-mail: wulinzhi@hrbeu.edu.cn
Harbin Institute of Technology,
Harbin 150001, China
e-mail: wulinzhi@hrbeu.edu.cn
Search for other works by this author on:
Xiao He
Key Laboratory of Advanced Ship
Materials and Mechanics,
College of Aerospace and
Civil Engineering,
Harbin Engineering University,
Harbin 150001, China
Materials and Mechanics,
College of Aerospace and
Civil Engineering,
Harbin Engineering University,
Harbin 150001, China
Tianzhi Yang
Faculty of Aerospace Engineering,
Shenyang Aerospace University,
Shenyang 110136, China
Shenyang Aerospace University,
Shenyang 110136, China
Linzhi Wu
Key Laboratory of Advanced Ship
Materials and Mechanics,
College of Aerospace and
Civil Engineering,
Harbin Engineering University,
Harbin 150001, China;
Materials and Mechanics,
College of Aerospace and
Civil Engineering,
Harbin Engineering University,
Harbin 150001, China;
Center for Composite Materials,
Harbin Institute of Technology,
Harbin 150001, China
e-mail: wulinzhi@hrbeu.edu.cn
Harbin Institute of Technology,
Harbin 150001, China
e-mail: wulinzhi@hrbeu.edu.cn
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received November 15, 2017; final manuscript received April 18, 2018; published online May 25, 2018. Editor: Portonovo S. Ayyaswamy.
J. Heat Transfer. Oct 2018, 140(10): 102001 (6 pages)
Published Online: May 25, 2018
Article history
Received:
November 15, 2017
Revised:
April 18, 2018
Citation
He, X., Yang, T., and Wu, L. (May 25, 2018). "Experimental Evidence of the Thermal Cloak Based on the Path Design of the Heat Flux." ASME. J. Heat Transfer. October 2018; 140(10): 102001. https://doi.org/10.1115/1.4040148
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