Propagating of sound and thermal waves in a reacting fluid |
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| Authors: | S Miguel H Ibáñez B César A Mendoza |
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| Institution: | (1) Departmento de Física, Facultad de Ciencias, Universidad de Los Andes, Mérida, Venezuela;(2) Departamento de Física, Facultad Experimental de Ciencias, Universidad del Zulia, Maracaibo, Venezuela |
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| Abstract: | The propagation of linear sound and thermal waves in a reacting fluid, in which the heating and cooling processes can be represented by a heat-loss functionL( , T,  is studied. A complex dispersion relation is found, from which the phase velocity and the scale length for damping (or amplification), of the above two-wave mode are calculated Wave amplification may occur in reacting locally stable fluids. Results are applied to a hydrogen plasma model assumed to be heated at a non-specified constant rate and cooled by recombination, excitation, and ionization by collisions, and free-free transitions. The phase velocity
, the scale-length for damping
, and the relevant relaxation times are calculated as functions of the dimensionless frequency
, for temperatures ranging from those at which the hydrogen plasma is neutral to those at which it becomes completely ionized. |
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