Influence of anisotropic pressure on viscosity and electrorheology of diethylene glycol-based MgAl(2)O(4) nanofluids

The paper presents results of rheological experiments on viscosity under anisotropic pressure and in electric field of diethylene glycol-based MgAl(2)O(4) nanofluids. Nanofluids have been prepared in a two-step method. The dynamic viscosity of nanofluids with various mass concentrations of nanoparticles was measured in the range of shear rates from 10 s (−1) to 1,000 s (−1) in constant temperature under the pressure of 7.5 MPa. In the second type of experiments, different values of the electric field up to 2,000 V/mm was used. Thixotropy structure of MgAl(2)O(4)-DG nanofluids has been studied in electrical field.