Acoustically controlled heat transfer of ferromagnetic fluid

Wu, Feng; Chen, Wu; Guo, Fangfang; Li, Duanyong

doi:10.1016/s0017-9310(01)00094-1

Cited by 15 publications

(6 citation statements)

References 15 publications

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“…The clearance is 0.3, 0.4, 0.5, 0.6 and 0.7 mm. [5]. After each charge of magnetic fluid, keep it for about 12 hours, and record the pressure value that can be maintained through self-repair after the magnetic fluid is charged.. For a typical seal clearance of 0.15 mm, the pressure that the single-stage seal can withstand is about 22 KPa, while for this designed seal structure [6], the pressure that the single-stage seal can withstand has reached about 38 KPa when the clearance is 0.4 mm.…”

Section: Design Of Sealing Structure For Magnetic Liquid Quench Pump ...mentioning

confidence: 99%

Research on magnetic fluid guaranteed combined sealing of high-volume fan

Xing

Hao

2023

Third International Conference on Mechanical Design and Simulation (MDS 2023)

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In order to solve the sealing problem of the cooling and evaporating medium of the large air volume fan in the large ship equipment, a five-stage, nine-tooth, large-gap magnetic fluid and magnetic grease combined rotary sealing device is designed, which is suitable for the environment with high rolling and high corrosion of large ships. Through the theoretical derivation of the pressure resistance formula and the Ansys finite element analysis, it is found that the pressure resistance of the seal increases with the increase of the saturation magnetization of the magnetic fluid, the yield stress of the magnetic grease and the magnetic field gradient in the seal gap. On the sealing test bench, the sealing pressure test was carried out on the device. When the maximum clearance is 0.7 mm, the single-stage pressure resistance capacity can still reach 20 KPa, and the sealing capacity remains stable with the increase of rotating speed. Theoretical and experimental results show that the design is suitable for large clearance sealing of high-power motors or other high vibration equipment in corrosive environment.

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Section: Design Of Sealing Structure For Magnetic Liquid Quench Pump ...mentioning

confidence: 99%

Research on magnetic fluid guaranteed combined sealing of high-volume fan

Xing

Hao

2023

Third International Conference on Mechanical Design and Simulation (MDS 2023)

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“…Ferrofluid sealing is a new type of non-contact sealing [1]. The magnetic fluid seal is a new type of sealing method, and it has tight sealing, an unmeasurable leakage rate, long service life, high reliability, is completely pollution-free, and can withstand high speed, best torque transmission, and low advantages such as viscous friction.…”

Section: Introductionmentioning

confidence: 99%

Assembly of magnetic liquid split seal device for high-power motor

Xing,

hao,

2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

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To ensure the reliability of the pressure resistance and the good sealing effect, it is necessary to put forward different degrees of roughness requirements for each contact surface. One end of the two end faces of the pole piece is in contact with the shell and the "O" rubber ring sealing ring, so the roughness requirement is lower, and 3.2 is enough. The other end face is in contact with the permanent magnet, so the roughness is required to reach 1.6. At the same time, perpendicularity requirements are put forward for both surfaces. The main components of the device are designed with a split structure to facilitate processing and installation, but at the same time, higher requirements on the processing techniques are required, and the precision in the assembly process is improved. The pole shoe is a key component of the magnetic liquid rotary seal device, and it is very important for its processing. In the assembly process, the split-type magnetic liquid rotary seal device first connects the split-type parts with bolts to ensure the roundness requirements.

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“…Wu et al [38] analyzed the heat transfer rate of a ferromagnetic fluid in the presence of acoustic and magnetic field using experimental and analytical approaches. Wu et al [38] derived an analytical model for non-dimensional effective thermal diffusivity as a function of acoustic wave, frequency and magnetic induction.…”

Section: Introductionmentioning

confidence: 99%

“…Wu et al [38] derived an analytical model for non-dimensional effective thermal diffusivity as a function of acoustic wave, frequency and magnetic induction. They found that the effective thermal diffusivity increased with the increasing acoustic wave frequency or the increasing magnetic induction.…”

Section: Introductionmentioning

confidence: 99%