Modeling shape deformation of ferrofluid ring section and secondary flow in ferrofluid seals with rectangular polar teeth using BEM and FVM

Yang, Wenming; Ren, Jiantuo; Li, Yifan; Liu, Beiying

doi:10.1016/j.cnsns.2023.107640

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Cited by 5 publications

References 29 publications

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Non-Newtonian behaviors of ferrofluid Couette–Poiseuille flows in time-varying magnetic fields

Yang,

Li,

Ren

et al. 2024

Journal of Non-Newtonian Fluid Mechanics

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Non-Newtonian behaviors of ferrofluid Couette–Poiseuille flows in time-varying magnetic fields

Yang,

Li,

Ren

et al. 2024

Journal of Non-Newtonian Fluid Mechanics

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Experimental study of sealing mechanism and sealing performance of symmetric magnetic fluid seal with occlusal pole teeth

Dou,

Yang,

Liu

et al. 2024

Physics of Fluids

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To investigate the sealing mechanism and performance of the symmetric magnetic fluid seal (SMFS) with occlusal pole teeth (OPT), an experimental device was designed. The impact of magnetic fluid volumes and groove widths on the sealing mechanism and performance of the SMFS-OPT was investigated under different environments. Combining experimental results and numerical analyses, the applicability of the magnetic fluid sealing theoretical pressure resistance formula to SMFS-OPT is verified. The results show that low magnetic fluid volume and a large groove width prolong the differential pressure reduction process, thereby reducing the pressure resistance of the sealing device. Increasing the volume of the magnetic fluid increases the sealing device's self-healing rate but does not change the trend of the number of ruptures' impact on the pressure resistance.

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Comparative study of the sealing mechanism and performance between magnetic fluid and magnetorheological fluid seals

Dou,

Yang,

Sun

et al. 2024

Physics of Fluids

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Magnetic fluid and magnetorheological fluid are two of the most effective magnetic media seals, yet the sealing effectiveness of both has not been compared systematically. To investigate the differences between magnetic fluid and magnetorheological fluid seals, a comparative experimental device is proposed to study the sealing mechanism and performance of the two sealing media at different temperatures. Numerical simulation is used to study the magnetic field distribution of the comparative experimental device and calculate the theoretical pressure resistance (PR) of the two sealing media, respectively. The correctness of the theoretical PR formula of the magnetic media seals with additional temperature coefficient is verified by the comparative experimental results. The results show that the number of resumptions of the magnetorheological fluid film decreases with increasing temperature, while the magnetic fluid film consistently undergoes only one recovery. In addition, the self-healing capability and PR of magnetorheological fluid seals are better than that of magnetic fluid seals, and it is less affected by temperature and has stronger temperature adaptability.

show abstract

Modeling shape deformation of ferrofluid ring section and secondary flow in ferrofluid seals with rectangular polar teeth using BEM and FVM

Cited by 5 publications

References 29 publications

Non-Newtonian behaviors of ferrofluid Couette–Poiseuille flows in time-varying magnetic fields

Non-Newtonian behaviors of ferrofluid Couette–Poiseuille flows in time-varying magnetic fields

Experimental study of sealing mechanism and sealing performance of symmetric magnetic fluid seal with occlusal pole teeth

Comparative study of the sealing mechanism and performance between magnetic fluid and magnetorheological fluid seals

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