Temat: 43.25.Yw - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Acoustic Streaming Induced by Periodic and Aperiodic Sound in a Bubbly Liquid
Autorzy:: Wojda, P.
Perelomova, A.
Powiązania:: https://bibliotekanauki.pl/articles/1198569.pdf
Data publikacji:: 2014-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 43.25.Yw
Opis:: The vortex flow which follows intense sound propagating in a bubbly liquid, is considered. The reasons for acoustic streaming are both nonlinearity and dispersion. That makes streaming especial as compared with that in a Newtonian fluid. Conclusions concern the vortex flow induced in a half-space by initially harmonic or impulse Gaussian beam. The vortex flow recalls a turbulent flow with increasing in time number of small-scale vortices in the vicinity of the axis of a beam's propagation.
Źródło:: Acta Physica Polonica A; 2014, 125, 5; 1138-1143
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Acoustically Active Antibubbles
Autorzy:: Kotopoulis, S.
Johansen, K.
Gilja, O.
Poortinga, A.
Postema, M.
Powiązania:: https://bibliotekanauki.pl/articles/1383564.pdf
Data publikacji:: 2015-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 47.55.dd
43.25.Yw
43.80.Sh
Opis:: In this study, we analyse the behaviour of antibubbles when subjected to an ultrasonic pulse. Specifically, we derive oscillating behaviour of acoustic antibubbles with a negligible outer shell, resulting in a Rayleigh-Plesset equation of antibubble dynamics. Furthermore, we compare theoretical behaviour of antibubbles to behaviour of regular gas bubbles. We conclude that antibubbles and regular bubbles respond to an acoustic wave in a very similar manner if the antibubble's liquid core radius is less than half the antibubble radius. For larger cores, antibubbles demonstrate highly harmonic behaviour, which would make them suitable vehicles in ultrasonic imaging and ultrasound-guided drug delivery.
Źródło:: Acta Physica Polonica A; 2015, 127, 1; 99-102
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Photothermal Investigation of Cavitation Wear Protecting NiTi-Coatings
Autorzy:: Gibkes, J.
Bein, B.
Pelzl, J.
Wieck, A.
Glokowski, Th.
Pohl, M.
Delgadillo-Holtfort, I.
Chirtoc, M.
Powiązania:: https://bibliotekanauki.pl/articles/1811521.pdf
Data publikacji:: 2008-12
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 62.20.Fe
43.25.Yw
78.20.Nv
Opis:: Photothermal radiometry was applied to investigate the effect of abrasion by cavitation on steel which was supplied with a wear protecting NiTi film. Phase and amplitude data from areas on the sample which where damaged differently by the cavitation effect indicate the appearance of a three layer structure with the cavitation treatment. With cavitational impact the thermal diffusion time of the first layer decreases and an interfacial layer emerges which is identified as a surface region of the steel substrate which has undergone a stress induced transformation from an austenite to a martensite structure.
Źródło:: Acta Physica Polonica A; 2008, 114, 6A; A-103-A-107
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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