Open AccessResearch and design of directional heat transmission structure based on metamaterial
Author(s) -
Lei Sun,
Zhe-Feng Yu,
Jie Huang
Publication year - 2015
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.64.084401
Subject(s) - thermal conductivity , heat flux , materials science , cloak , transformation (genetics) , thermal , mechanics , oblique case , metamaterial , transmission (telecommunications) , coordinate system , heat transfer , optics , thermodynamics , physics , optoelectronics , chemistry , geometry , composite material , computer science , telecommunications , biochemistry , linguistics , philosophy , mathematics , gene
Based on the research of thermal cloak, directional heat transmission structure is proposed in this paper. On the basis of transformation thermodynamics, the thermal conductivity expression for directional heat transmission structure is derived by the oblique coordinate transformation. The results from the numeric calculation indicate that the heat flux flows to the designed high temperature side while the low temperature side remains at low temperature. Furthermore, rotational transformation is performed on the basis of oblique coordinate transformation. The derived thermal conductivity expression has two vertical segments. The calculation results display that with the increase of the thermal conductivity along the normal of the high temperature side, the heat transmission efficiency is improved greatly. Moreover, the temperature difference between the high and low temperature side increases after the rotational transformation. Directional heat transmission has potential applications in infrared stealth and heat protection.