Non-Wave Variations in Temperature Caused by Sound in a Chemically Reacting Gas
A. Perelomova and W. Pelc-Garska
Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, G. Narutowicza 11/12, 80-233 Gdańsk, Poland
Received: September 27, 2010
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A weakly nonlinear generation of non-acoustic modes in the field of sound in a gas is considered. An exoteric chemical reaction of A → B type, which takes place in a gas, may be reversible or not. Two types of sound are considered, low-frequency and high-frequency as compared with the characteristic time of a chemical reaction. For both these cases, the governing equations of non-acoustic modes are derived and conclusions of the efficiency of their nonlinear generation by sound are made. The character of nonlinear generation of non-acoustic modes by sound depends essentially on reversibility of a chemical reaction.
DOI: 10.12693/APhysPolA.120.455
PACS numbers: 43.25.-x, 43.20.Bi