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Method for controlling flowing of magnetic liquid

A technology of magnetic liquid and flow direction, applied in control/adjustment system, adjustment of magnetic variable, instruments, etc., can solve the problems of practical application, wear and blockage of fluids that limit the addition of suspended particles, and achieve a wide range of scientific and applied value and methods. Unique, structurally novel effects

Inactive Publication Date: 2015-01-28
SHANGHAI UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, millimeter or micron-sized particles are likely to cause adverse results such as wear and clogging in practical applications, which limits the practical application of fluids with suspended particles in industry

Method used

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  • Method for controlling flowing of magnetic liquid

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Experimental program
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Effect test

Embodiment 1

[0014] like figure 1 As shown, a method for controlling the flow of a magnetic fluid comprises the following steps:

[0015] a. The magnetic field generating device 1 is symmetrically arranged on both sides of the channel container 2, and the magnetic liquid 3 is placed in the channel container 2;

[0016] b. The magnetic field generating device 1 generates a gradient magnetic field, and adjusts the gradient direction of the gradient magnetic field. When the gradient direction of the gradient magnetic field generated by the magnetic field generating device 1 is the same as the flow direction of the magnetic liquid 3, the magnetic nanoparticles in the magnetic liquid 3 flow under the action of magnetic force. Speed ​​up; when the gradient direction of the gradient magnetic field generated by the magnetic field generating device 1 is opposite to the flow direction of the magnetic liquid 3, the flow speed of the magnetic nanoparticles in the magnetic liquid 3 will be slowed dow...

Embodiment 2

[0019] The embodiment of this embodiment is basically the same as that of Example 1, the difference is that:

[0020] In this embodiment, the magnetic field generator 1 is powered by an AC power supply, and the magnetic liquid 3 is oil-based FeSO 4 magnetic fluid.

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Abstract

The invention relates to a method for controlling the flowing of magnetic liquid. The method comprises the following steps that a, magnetic field generating devices are symmetrically arranged at the two sides of a passage container, and the magnetic liquid is contained in the passage container; b, the magnetic field generating devices generate a gradient magnetic field, the gradient direction of the gradient magnetic field is regulated, and when the gradient direction of the gradient magnetic field generated by the magnetic field generating devices is identical to the magnetic liquid flowing direction, the flowing speed of magnetic nanometer particles in the magnetic liquid is accelerated under the magnetic force effect; when the gradient direction of the gradient magnetic field generated by the magnetic field generating devices is opposite to the magnetic liquid flowing direction, the flowing speed of the magnetic nanometer particles in the magnetic liquid is decelerated under the magnetic force effect; and the goal of controlling the flowing of the magnetic liquid is further achieved through regulating the dimension of the magnetic field gradient. The method has the advantages that the structure is novel, the method is unique, and wide scientific and application values are realized in the fields of heat exchangers, cooling loops and energy conversion.

Description

technical field [0001] The invention relates to a method for controlling the flow of magnetic liquid, belonging to the field of fluid flow control methods. Background technique [0002] With the in-depth research on enhanced heat transfer technology of heat exchange equipment, the low thermal conductivity of heat exchange working medium has become the main obstacle to the research and development of a new generation of high-efficiency cooling technology. In order to further develop high-efficiency compact heat exchange equipment with small size, light weight and good heat transfer performance to meet the heat transfer requirements of high heat load, it is necessary to improve the thermal conductivity of the working fluid itself. Since the thermal conductivity of solid particles can be several orders of magnitude larger than that of liquids, an effective way to increase the thermal conductivity of liquids is to add metal, non-metallic or polymer solid suspended particles to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F7/00
Inventor 雷作胜许春龙史永超韦如军宋昇阳王松宝
Owner SHANGHAI UNIV
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