Physicists have found that when a special coating is applied to the inner surface of a pipe, viscous liquids in it begin to move faster than water..
Typically thick liquids such as honey or petroleum products do not flow well over any surface, especially inside pipes. Therefore, pumping them requires pressure, which is associated with the risk of pipe rupture and additional energy consumption..
New pipe coating makes viscous fluids flow 10 times faster than water
Researchers at Aalto University found that bad problem fluidity can be solved by a special hydrophobic coating, which after application creates tiny bumps on the surface. The space between them is filled with air, which forms small gap between the inner wall of the pipe and its contents.
As a result, viscous liquids actually lie on an air cushion, and precisely because of their density, they move up to 10 times faster than water under the influence of gravity.
Their discovery could be very beneficial in a number of industries, including oil refining, and in various medical devices, the team said..
We also previously reported on another repellent coating that allows paper sheets to be turned into self-contained electronic controllers powered by the user’s touch energy..
text: Ilya Bauer, photo and video: Aalto University