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engineering Engineering is the practice of using natural science, mathematics, and the engineering design process to Problem solving#Engineering, solve problems within technology, increase efficiency and productivity, and improve Systems engineering, s ...
, entrainment is the entrapment of one substance by another substance. For example: * The entrapment of
liquid Liquid is a state of matter with a definite volume but no fixed shape. Liquids adapt to the shape of their container and are nearly incompressible, maintaining their volume even under pressure. The density of a liquid is usually close to th ...
droplets or
solid Solid is a state of matter where molecules are closely packed and can not slide past each other. Solids resist compression, expansion, or external forces that would alter its shape, with the degree to which they are resisted dependent upon the ...
particulates in a flowing gas, as with smoke. * The entrapment of gas bubbles or solid particulates in a flowing liquid, as with aeration. * Given two mutually insoluble liquids, the emulsion of droplets of one liquid into the other liquid, as with margarine. * Given two gases, the entrapment of one gas into the other gas. * " Air entrainment" – The intentional entrapment of air bubbles into concrete. * Entrainment defect in metallurgy, as a result of folded pockets of oxide inside the melt.


See also

* Souders–Brown equation


References

Chemical engineering {{engineering-stub