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It was found that the inception of attached cavitation on curved surfaces or hydrofoils at incidence is relatively insensitive to the concentration of free stream nuclei due to the local formation microbubbles that act as local nucleation sites. 

We showed that stiff porous media can be modeled as a first-order low pass filter acting on the pressure pulse that propagates through the porous medium following the impingement of normal shock waves. 

Fine water films form during gravity-induced oil-water separation. the films persist in the oil for a long time until they break up leading to the formation of fine water droplets that remain suspended in the oil.