Numerical simulations of the effect of time-dependent random mass density field on frequencies of sound waves

• Autorzy: Murawski K.
• Języki publikacji: EN

Abstrakty

EN

Numerical simulations of the effect of random mass density field on frequencies of sound waves are considered for driven and impulsive sound waves which are described by one-dimensional hydrodynamic equations, with the ponderomotive force which depends stochastically both on space and time. The numerical results reveal frequency increase for short waves and both wave damping and amplification for the overall range of wavenumbers. Moreover, a space- and time-dependent random field leads to a generation of a wide frequency spectrum which contains both retarded and speeded up waves.

Słowa kluczowe

EN

numerical simulations; convection - Sun; oscillations - turbulence; time-dependent random mass density field; space-dependent random field

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 2001
• Tom: Vol. 5, No 2
• Strony: 229--238
• Opis fizyczny: Bibliogr. 19 poz., rys.

Twórcy

autor

Murawski K.

• Department of Environmental Physics, Institute of Environmental Protection Engineering, Technical University of Lublin, Wapienna 40B, 20-618 Lublin, Poland

Bibliografia

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