Magnetorheological Fluids Flow Modelling Used in a Magnetorheological Brake Configuration

This paper focuses on the behavior of two conventional magnetorheological fluids (MRF 132 DG and MRF 336 AG) together with a non-conventional one (SMR 35% Fe). First, the magnetic flux density of the applied magnetic field was compared with the magnetic flux density of magnetic field in each of our samples. The regular flow curves were experimentally determined in order to describe the magnetorheological behavior for the three fluids. Applying the Hershel-Bulkley model, parameters of MRF's are determined. It is shown that the chosen model accurately fits the experimental data. Next, the numerical investigation performed are presented. Fluent V6.3 commercial code was used in order to achieve the purpose of this study [15]. A 2D computational domain was used. Both, geometrical constrain and operating condition have been set in agreement with a real MRB device [11]. The results are presented in the last part together with the final conclusion.