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• Nonlinear generation of non-acoustic modes by low-frequency sound in a vibrationally relaxing gas

  Publication

  • A. Perelomova

  - CANADIAN JOURNAL OF PHYSICS - Year 2010

  Two dynamic equations referring to a weakly nonlinear and weakly dispersive flow of a gas in which molecular vibrational relaxation takes place. are derived. The first one governs an excess temperature associated with the thermal mode, and the second one describes variations in vibrational energy. Both quantities refer to non-wave types of gas motion. These variations are caused by the nonlinear transfer of acoustic energy into...

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