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Environmental Response of 2D Thermal Cloak under Dynamic External Temperature Field
Yiyi Li1, Haochun Zhang1, Mingyuan Sun1
1School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.
Entropy (Basel, Switzerland)
|December 8, 2020
Summary
This study evaluates thermal cloak performance in dynamic environments, introducing entropy analysis for better adaptability and practical engineering applications. The research provides equations and scope for improved thermal cloak efficiency.
Area of Science:
- Thermodynamics
- Transformation Thermodynamics
- Heat Transfer
Background:
- Thermal cloaks, counterparts to transformation optics, are typically studied for structural design, neglecting dynamic environmental adaptability.
- Limited research exists on energy processes and performance evaluation of thermal cloaks under dynamic conditions, hindering engineering applications.
Purpose of the Study:
- To evaluate the cloaking performance and environmental response of a 2D thermal cloak in a dynamic sinusoidal environment.
- To analyze the influence of environmental parameters (amplitude, density, phase, temperature difference) on the thermal cloak system.
- To introduce local entropy production rate and response entropy for assessing heat dissipation and energy loss.
Main Methods:
- Simulated a 2D thermal cloak within a dynamic sinusoidal environment with varying parameters.
- Utilized local entropy production rate and response entropy to analyze energy processes and system response.
- Developed comprehensive schemes to derive fitting equations and determine the applicable scope for the thermal cloak.
Main Results:
- Quantified the cloaking performance and environmental response of the thermal cloak under dynamic conditions.
- Identified the specific influences of ambient amplitude, distribution density, phase, and temperature difference on cloaking efficiency.
- Established a fitting equation and defined an appropriate scope for the practical application of the thermal cloak.
Conclusions:
- The study provides a novel application of entropy concepts for analyzing thermal cloaks.
- Results offer valuable insights for improving the working efficiency of thermal cloaks.
- Findings are crucial for advancing the potential engineering applications of thermal cloak technology.
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