Regulation and control method for realizing metamaterial soaking substrate

A technology in substrates and substrates, applied in thermodynamics-related fields, can solve problems such as complex manufacturing and use stages of the process, impossibility of long-term use, corrosion, etc.

Pending Publication Date: 2021-07-30
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, the structure of distinguishing the upper and lower cover plates will be extremely complicated in the design, process manufacturing and use stages
Moreover, working fluid needs to flow in the liquid vapor chamber,

Method used

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  • Regulation and control method for realizing metamaterial soaking substrate
  • Regulation and control method for realizing metamaterial soaking substrate
  • Regulation and control method for realizing metamaterial soaking substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Example 1 - two-dimensional steady-state simulation

[0057] The two-dimensional schematic diagram of the soaking substrate to be solved is as follows: figure 1 shown, where the gray area P' 1 Q' 1 M' 1 N' 1 is the position of the heat source, and the heat source of the soaking substrate to be solved is in the lower left corner of the bottom. The function of regulating the heat conduction of the heat-spreading substrate to be solved is as follows:

[0058] In order to demonstrate the correctness of the theory, the present invention utilizes the finite element simulation analysis method to verify. We assume that the substrate is a rectangular heat-conducting substrate with a length of 100mm and a width of 5mm. The parameter settings of the substrate to be solved for the uniform heat are designed according to formula (4). The results of the two-dimensional steady-state simulations are shown in figure 2 middle. During the simulation process, the upper boundary and...

Embodiment 2 — 3

[0061] Example 2 - Three-dimensional steady-state simulation

[0062] The present invention has also carried out three-dimensional steady-state simulation. At this time, the substrate to be solved is a three-dimensional cuboid. We set the substrate as a cuboid heat-conducting substrate. The substrate is 200 mm long, 200 mm wide, and 10 mm high. The results are shown in image 3 middle. During the simulation process, the six surfaces are convective heat transfer boundary conditions, and the convective heat transfer coefficient is 5W / (m 2 ·K), the parameter setting of the thermal superstructure soaking substrate is designed according to the formula (7).

[0063] Observe the simulation results image 3 It can be found that, similar to the two-dimensional results, image 3 In (b) right figure, the temperature on the top section of the soaking substrate to be solved is uniform, image 3 In (d), the temperature of all points on the top section of the soaking substrate to be solv...

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Abstract

The invention belongs to the technical field related to thermodynamics, and discloses a regulation and control method for realizing a metamaterial soaking substrate. The regulation and control method comprises the following steps: S1, setting a thermal conductivity coefficient of a homogeneous substrate and the position and size of a phantom heat source on the substrate; S2, dividing the positions of non-heat sources in the homogeneous substrate and the soaking substrate to be solved into a plurality of areas, wherein the areas are in one-to-one correspondence; constructing a coordinate transformation relation between the homogeneous substrate and the soaking substrate to be solved so as to obtain a transformation matrix between the homogeneous substrate and the soaking substrate to be solved; and S3, constructing a thermal conductivity coefficient relational expression of the conversion matrix and each region on the soaking substrate to be solved, calculating the thermal conductivity coefficient of each region on the soaking substrate to be solved, and selecting a material corresponding to each region on the soaking substrate to be solved according to the thermal conductivity coefficient, so as to realize regulation and control of thermal conduction of the soaking substrate to be solved. According to the invention, the temperature distribution of the substrate is changed, the effect of uniform temperature at the top of the substrate is realized, and the function of a vapor chamber is achieved.

Description

technical field [0001] The invention belongs to the technical field related to thermodynamics, and more specifically, relates to a control method for realizing a uniform heat substrate of a metamaterial. Background technique [0002] Based on their artificially designed special structures, thermal metamaterials can produce various novel thermophysical properties, which have had a huge impact on the field of heat flow management. At present, the research of thermal metamaterials in the direction of heat conduction is mainly heat flow control, that is, the quantitative and directional control of heat flow is carried out by designing the geometric structure of metamaterials. At present, most of the research is based on functions such as thermal stealth, thermal transparency, and thermal phantom. Huazhong University of Science and Technology Hu et al proposed based on heat flow control that a single internal original heat source can be disguised as multiple virtual heat source ...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06F119/08
CPCG06F30/23G06F2119/08
Inventor 胡润任学成刘一达
Owner HUAZHONG UNIV OF SCI & TECH
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