Two interesting effects in the ideal medium are considered. The first one consists in the following. When body moves in an ideal medium, the medium has energy and momentum, defined through the attached mass and velocity of body. It turns out that the energy of the medium is concentrated around the body, while the momentum is placed at infinity. The second effect is concerned to acoustical streaming. The surface oscillations in an ideal medium can generate acoustical streaming - stationary flows of fluid.
47.15.km Potential flows
Andreyev Acoustic Institute. Shvernik st., 4, Moscow, 117036, Russia
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