INERTIA METHOD FOR MEASURING THE VISCOSITY OF NON-NEWTONIAN FLUIDS Russian patent published in 2023 - IPC G01N11/04 

FIELD: measuring technology.

SUBSTANCE: invention relates to measuring technology and can be used to measure the coefficient of kinematic viscosity at different shear rates, temperature and pressure for non-Newtonian fluids that have the ability to reflect coherent radiation. The inertial method for measuring the viscosity of non-Newtonian fluids includes a smooth acceleration and a sharp stop of a closed transparent torus rotating around its axis, filled with a test liquid with light-reflecting properties, and determining the kinematic parameters of the inertial flow, namely, the shear strain rate on the flow surface and the volumetric flow rate, according to which from the simplified the Navier-Stokes equations numerically determine the kinematic viscosity of the fluid, while the kinematic characteristics are measured indirectly using a pre-trained convolutional neural network, which receives images of the fluid flow illuminated by coherent radiation at fixed times, obtained using a high-speed CMOS camera.

EFFECT: improving the accuracy of measuring the viscosity of non-Newtonian fluids.

1 cl, 1 dwg, 1 tbl