Nonlinear Interaction of Modes in a Planar Flow of a Gas with Viscous and Thermal Attenuation

• Autorzy: Perelomova Anna

Identyfikatory

DOI

10.24425/aoa.2019.129270

• Języki publikacji: EN

Abstrakty

EN

The nonlinear interaction of wave and non-wave modes in a gas planar flow are considered. Attention is mainly paid to the case when one sound mode is dominant and excites the counter-propagating sound mode and the entropy mode. The modes are determined by links between perturbations of pressure, density, and fluid velocity. This definition follows from the linear conservation equations in the differentia form and thermodynamic equations of state. The leading order system of coupling equations for interacting modes is derived. It consists of diffusion inhomogeneous equations. The main aim of this study is to identify the principle features of the interaction and to establish individual contributions of attenuation (mechanical and thermal attenuation) in the solution to the system.

Słowa kluczowe

EN

nonlinear wave theory; nonlinear acoustics; coupling dynamic equations; Burgers equation; diffusion equation

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2019
• Tom: Vol. 44, No. 3
• Strony: 551--559
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Perelomova Anna

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

Bibliografia

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