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Hasil Pencarian

Ditemukan 2 dokumen yang sesuai dengan query
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Anna Perelomova
Nonlinear phenomena of small-scale sound in a gas with exponential stratification
" ABSTRAK
The nonlinear dynamics of perturbations, quickly varying in space, with comparatively large characteristic wavenumbers k k > 1/H, is considered. H is the scale of density and pressure reduction in unperturbed gas, as the coordinate increases H is the so called height of the uniform equilibrium gas. Coupling nonlinear equations which govern the sound and the entropy mode in a weakly nonlinear flow are derived. They describe the dynamics of the gas in the leading ... "
TASK, 2017
600 SBAG 21:2 (2017)
Artikel Jurnal  Universitas Indonesia Library
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Anna Perelomova
Curves of thermodynamic states in some fluids with dispersion
" ABSTRAK
Variations in the thermodynamic state of a dispersive medium, caused by sound, are studied. A bubbly liquid and a Maxwell fluid are considered as examples. Curves in the plane of thermodynamic states are plotted. They are in fact pictorial images of linear relations of excess pressure and excess density in the acoustic wave which reflect irreversible attenuation of the sound energy. The curves account for the nonlinear generation of the entropy mode in the field ... "
TASK, 2017
600 SBAG 21:1 (2017)
Artikel Jurnal  Universitas Indonesia Library