Entropy generation in multicomponent reacting fluid flow with heat and mass transfer
- MITI, Tsukuba, Ibaraki (Japan). National Inst. of Materials and Chemical Research
- Univ. of Hawaii, Honolulu, HI (United States). Hawaii Natural Energy Inst.
A comprehensive equation to determine the rate of local entropy generation in multicomponent, reacting, laminar fluid flow involving heat and mass transfer is formulated based on species-average velocity in a multicomponent continuum. The entropy-generation equation developed in this study suggests that species diffusion induces a diffusive-viscous effect, heretofore not reported in the literature, which could contribute significantly to entropy generation in multicomponent fluid systems, and that entropy generation in a multicomponent system exceeds that in a single-component fluid system having similar velocity and temperature distributions because a greater number of irreversible processes, such as species diffusion, chemical reaction, and the Soret and Dufour effects, are involved. Under appropriate conditions, if the diffusive-viscous effect is neglected, the entropy-generation equation of this study reduces to those reported in the literature for simpler fluid systems based on mean flow.
- OSTI ID:
- 483928
- Report Number(s):
- CONF-961105--; ISBN 0-7918-1527-7
- Country of Publication:
- United States
- Language:
- English
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