Properties of Non-Newtonian fluid
autorzy: Volodymyr Stepanov, Anastasia Tataryn
Non-Newtonian fluids change their density and viscosity when exposed to physical force. This makes it especially promising for such substances to be used under variable stresses. If a solution of starch of a certain concentration is sharply affected by force, it acquires the properties of a solid. This is due to the fact that starch particles swell in water and form conglomerates in the form of chaotically woven molecules. The Newtonian effect was observed for samples in which the ratio of starch to water was 5 to 5 and 6 to 4. Sedimentation-stable, homogeneous and uniform white mixtures were obtained. Sedimentation-stable, homogeneous and uniform white mixtures were obtained. Thus, the optimal ratio of components to obtain a non-Newtonian fluid has been experimentally proven. The dependence of the viscosity of the starch solution on the concentration at a temperature of 18 ˚C was studied using a capillary viscometer. Dynamic and specific viscosity are calculated. When the starch concentration increased 5 times, the specific viscosity increased 11.8 times. The possibility of using non-Newtoniam fluids of different viscosities to create a “lying policeman”; has been established. It is proposed to use aramid fabric in combination with a plastic tube filled with non-Newtonian fluid. These materials must correspond in their properties to the shear rates to which they will be subjected during operation. The rheological behavior of a non-Newtonian fluid is described using the Quetta flow scheme.
Transport / Logistyka
Ochrona własności intelektualnej
poziom gotowości technologicznej
TRL 4 skala laboratoryjna