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Abrupt contraction flow of magnetorheological fluids

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Academic year: 2021

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Fig. 1. Experimental flow cell. 1 – plexiglass tube; 2 – upper brass lid; 3 – lower brass lid; 4 – thin titanium disk  with a coaxial orifice, 0.3 mm in diameter; 5 – MR fluid; 6 – hanging MR fluid drop; 7 – pressure transducer; 8  –  air  reservoir,  1L;
Fig.  2.  Distribution  of  the  magnetic  field  strength  along  the  flow  cell  axis  in  the  downstream  direction
Fig. 3. Shear rheometry of the MR fluid in the presence of the magnetic field normal to the flow: flow curves (a)  at  different  magnetic  field  intensities;  the  yield  stress  versus  the  magnetic  field  intensity  (b)
Fig. 5. Bagley plot for the MR fluid contraction flow at various flow rates and in the presence of axial magnetic  field of intensity, H 0 =30.6 kA/m
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