Multi-physical Coupling Simulation and Pressure Drop Performance Analysis of Dual Magnetic Circuit Hybrid Flow Magnetorheological Valve
To achieve a greater pressure drop within a limited space,a novel dual magnetic circuit hybrid flow magnetorheological(MR)valve was proposed,the magnetic reluctance and pressure drop were also calculated.The Bingham model was utilized to identify parameters for shear rate and shear stress relationships measured by the rheometer.The trends of these two parameters under different magnetic flux densities were obtained,and these data were imported into COMSOL software for simulation calculations using interpola-tion method.The distributions of magnetic flux density,fluid flow and pressure drop under different currents were analyzed using multi-physical coupling simulation.The influences of structure settings on the performance of MR valve were also analyzed.The simulation re-sults show that pressure drop increases with the increment of applied current;when the current reaches 2 A,the pressure drop can reach 4.06 MPa;additionally,the MR valve with a spacer ring exhibits approximately 5%increase in pressure drop compared to the valve without a spacer ring.
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