Pumps process industry uses

Up to this point, we have considered liquids deposited on plates or other large objects. What happens in the case of smaller objects, such as tubes or threads Such questions have direct practical applications. The fact that some residual liquid remains in a tube when one tries to empty it out has important ramifications in the process of assisted recovery of petroleum (when one pumps out a porous rock saturated with oil, approximately 40% of the crude oil is left behind). On a more modest laboratory scale, most of us are familiar with the propensity of a pipette to retain a small amount of liquid after it has been drained out. At the other end of the spectrum, the greasing or oiling of fibers, which refers to their lubrication at high speed, is an important industrial process. It benefits both their manufacture (it cuts back on ruptures by improving their cohesiveness) and their applications (if the fibers are intended to be used as reinforcement of composite materials, the process is used to coat the fibers with adhesion-promoting substances). 

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