Multilayer nano-fluid based adjustable three-dimensional heat invisible cloak

A nano-fluid, cloak technology, applied in coats, clothing, clothing, etc., can solve the problem of thermal stealth function not having tunability, can not be turned on, etc., to improve computer performance, save energy, reduce complexity and cost.

Active Publication Date: 2017-07-28
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: to overcome the shortcomings of existing thermal stealth cloaks that are mostly based on two-dimensional planar structures, and the thermal stealth function of thermal stealth cloaks does not have tunability (that is, the thermal stealth function cannot be turn

Method used

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  • Multilayer nano-fluid based adjustable three-dimensional heat invisible cloak
  • Multilayer nano-fluid based adjustable three-dimensional heat invisible cloak
  • Multilayer nano-fluid based adjustable three-dimensional heat invisible cloak

Examples

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Embodiment 1

[0029] First, an internal support shell 5 is formed on the substrate 1 by a material growth process, as shown in Figure 2(a);

[0030]Then, through the material growth process and masking process, the designed nanofluid ring layer is superimposed layer by layer on the outer surface of the substrate 1 and the inner support shell 5 from bottom to top, so that the surface of the N-layer nanofluid covers the ring layer 2, such as Shown in accompanying drawing 2 (b). Among them, the design of the nanofluid surface ring layer and the internal support shell can use algorithms such as finite time domain difference method and finite element method. The metal thin layer patch 3 is processed between the inner ring wall of the N-layer nanofluid surface covering ring layer 2 and the outer wall of the inner support shell 5 through a coating process.

[0031] Corresponding to each thin metal patch 3, the inner support shell is drilled with small holes 7. A wire 8 is installed in the small ...

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Abstract

The invention provides a multilayer nano-fluid based adjustable three-dimensional heat invisible cloak. The adjustable three-dimensional heat invisible cloak can be implemented by using a surface covering housing layer consisting of nano fluids; the surface covering housing layer is formed by superimposing a plurality of nano fluid circular layers from bottom to top; the thermomagnetic conversion and the thermophysical characteristic of nano fluids in different circular layers, the characteristic of nano magnetic particles included in the nano fluids, the fluid structure, and chemical constitution of nano particles can be controlled so as to various layers to correspond to different heat conductivity coefficients, three-dimensional heat conductivity distribution desired by heat invisibility can be acquired, and then after heat flows bypass a cloak zone, a temperature field and an isotherm resume original distribution, and the heat invisible function can be achieved; heat conductivity of the nano fluid in each circular layer can be controlled circularly, real-time on/off performance of the heat invisible cloak can be achieved, and the defect that the three-dimensional heat invisible cloak cannot allow circular on-off can be overcome.

Description

technical field [0001] The invention relates to a method and device for realizing an adjustable three-dimensional thermal invisibility cloak based on multi-layer nanofluid, which can be applied to the field of heat flow control. Background technique [0002] In 2006, Document 1: "J.B.Pendry et al, SCIENCE, 2006(312): 1780" proposed for the first time that the use of anisotropic media can manipulate the propagation direction of light waves and realize the concept of optical cloaking, which has attracted widespread attention and has become an important field in the field of optics. research hotspots. At the same time, as an expanded field of optical cloak application, that is to manipulate the direction of heat flow through artificial structures to achieve thermal cloaking has quickly become a hot issue in the field of thermodynamics. In 2013, document 2: "R. Schittny et al, Phys. Rev. Lett. 2013(110): 195901" used copper and polydimethylsiloxane to make a two-dimensional cir...

Claims

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Application Information

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IPC IPC(8): A41D3/08
CPCA41D3/08
Inventor 曹暾
Owner DALIAN UNIV OF TECH
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