Study and optimization on the ferrofluid seal with Sandwich magnetic circuit
Year: 2025
Type: article
Abstract: This study proposes a novel ferrofluid sealing structure employing a sandwich magnetic circuit (FSMC), distinguished by the integration of an additional permanent magnet within the shaft sleeve cavity to significantly enhance sealing capability. Finite element (FE) simulations were conducted to evaluate the magnetic field distribution and corresponding pressure resistance of the FSMC, with the modeling approach validated against previously published experimental data. Response surface methodology (RSM) was subsequently applied to systematically optimize key geometric parameters and investigate the interactive effects of these parameters on seal pressure resistance. The findings demonstrate that the FSMC configuration significantly improves the sealing performance, achieving increases in pressure resistance ranging from 7.86 % at a seal gap of 0.2 mm to 18.94 % at 1.0 mm, compared with conventional ferrofluid seals (CFS). This study provides a guideline and systematic design approach for ferrofluid sealing applications.
Authors: Jun Wang, Jun Wang, Lehong Wang, Jianmei Wang, Jianmei Wang, Qiang Wang, Lihua Lv
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,210
Award: G8563299925
OpenAlex ID: W4414958330