Abstract
This paper describes a study of the formation of liquid jets in elastic and Newtonian liquids. The technique used to study this phenomenon involves a shock wave, emanating from the collapse of a cavitation bubble, which causes a gas bubble underneath the free surface of a liquid column to collapse, thereby producing a liquid jet. A comparison of the jets formed by commercial multigrade motor oils and their Newtonian counterparts shows that, in the former, liquid jet production is markedly suppressed, with up to an order-of-magnitude reduction in length being recorded. Similar findings are made when elastic `Boger' liquids and their Newtonian counterparts are compared.
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