4.6 Article

Research on the Flow and Transmission Performance of Magnetorheological Fluid between Two Discs

Journal

APPLIED SCIENCES-BASEL
Volume 12, Issue 4, Pages -

Publisher

MDPI
DOI: 10.3390/app12042252

Keywords

shear thinning; flow analysis; Herschel-Bulkley model; torque

Funding

  1. National Natural Science Foundation of China [51875068, 51905060]
  2. Science and Technology Research Program of Chongqing Municipal Education Commission [KJQN201901107]
  3. Natural Science Foundation Project of Chongqing Science and Technology Commission [cstc2020jcyj-msxmX0346]
  4. China Postdoctoral Science Foundation [2021M700619]

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This study analyzed the viscoplastic flow of magnetorheological fluid in a disc using the Navier-Stokes Momentum Equation. The magnetorheological properties of the fluid were described using the Herschel-Bulkley model. The relationship between torque, magnetic field, material, size, and motion was established, and the magnetic field and working gap were optimized and analyzed.
The viscoplastic flow of magnetorheological fluid in a disc was analyzed based on the Navier-Stokes Momentum Equation, and the yielded and unyielded decomposition surfaces were obtained. For the shear-thinning phenomenon of magnetorheological fluid, the magnetorheological properties of the magnetorheological fluid were described based on the Herschel-Bulkley model. Then, the relationship between torque, magnetic field, material, size and motion was established, and the magnetic field and working gap were optimized and analyzed. The results show that in the unyielding region, the magnetorheological fluid flows rigidly. In the yielding region, it flows as a viscous fluid. The degree of error of the proposed torque equation decreased gradually with the increase to current, as observed by experimental comparison.

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