Influence of inlet flow conditions on the performance of a swirl-stabilized combustor burning liquid fuel spray
✍ Scribed by A. Datta
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 170 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0363-907X
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✦ Synopsis
A numerical model of liquid fuel spray combustion is developed to study the e!ects of inlet #ow conditions of primary and dilution air on the performance of a swirl-stabilized axi-symmetric combustor. The model is based on two-phase stochastic separated #ow approach. A standard k} model with logarithmic law of the wall for the near-wall region is adopted for the solution of the gas phase turbulence. The chemical reaction is taken as a single step, irreversible, global one with the rate determined by the kinetically and di!usionally controlled rates. The liquid spray is divided into a "nite number of droplet classes with the size distribution following a probability function. It has been observed that an improved pattern factor and better combustion e$ciency can be obtained when both the primary and the dilution air streams enter the combustor with swirl, but in the counter-rotating directions. However, the combustor pressure loss factor increases for the counter-rotating #ow entries of the primary and the dilution air compared to the co-rotating air entries or to the swirled primary and non-swirled dilution air entries.