Nonlinear Influence of Sound on the Vibrational Energy of Molecules in a Relaxing Gas

• Autorzy: Perelomova A.
• Języki publikacji: EN

Abstrakty

EN

Dynamics of a weakly nonlinear and weakly dispersive flow of a gas where molecular vibrational relaxation takes place is studied. Variations in the vibrational energy in the field of intense sound is considered. These variations are caused by a nonlinear transfer of the acoustic energy into energy of vibrational degrees of freedom in a relaxing gas. The final dynamic equation which describes this is instantaneous, it includes a quadratic nonlinear acoustic source reflecting the nonlinear character of interaction of high-frequency acoustic and non-acoustic motions in a gas. All types of sound, periodic or aperiodic, may serve as an acoustic source. Some conclusions about temporal behavior of the vibrational mode caused by periodic and aperiodic sounds are made.

Słowa kluczowe

EN

relaxing gas; non-equilibrium media; nonlinear effects of sound

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2012
• Tom: Vol. 37, No. 1
• Strony: 89--96
• Opis fizyczny: Bibliogr. 16 poz.

Twórcy

autor

Perelomova A.

• Faculty of Applied Physics and Mathematics, Gdańsk University of Technology Narutowicza 11/12, 80-233 Gdańsk, Poland,

Bibliografia

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