Characteristics of shear layer with pyrolysing coal particles in one of the streams
This article presents an experimental study of the growth and structure of a two-dimensional shear layer formed by two gas streams, one of which contained coal particles undergoing pyrolysis. Apparatus consisted of a low speed shear layer wind-tunnel designed to generate two gas streams, initially with uniform velocity profiles and isotropic turbulence, which mix at the end of a splitter plate. A fluidized bed injector system was used to introduce bituminous coal particles into one of the streams which was heated to cause their pyrolysis. The test section was optically accessible. The instrumentation included thermocouple, Pitot tube, laser velocimeter, and gas analyzers. Velocity profiles, temperature profiles, shear layer growth rate parameter, and turbulent intensity measurements were obtained. Results indicate that the presence of coal particles affect the velocity and decreases the shear layer growth rate (visible and vorticity thickness) significantly; however, the mass addition due to pyrolysis alone does not change the shear layer characteristics significantly.
- Research Organization:
- Univ. of Oklahoma, Norman, OK (US)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG22-93PC93221
- OSTI ID:
- 20013523
- Resource Relation:
- Conference: 1998 International Joint Power Generation Conference, Baltimore, MD (US), 08/23/1998--08/26/1998; Other Information: PBD: 1998; Related Information: In: Proceedings of the 1998 international joint power generation conference (FACT-Vol.22). Volume 1: Fuels and combustion technologies; Gas turbines; Environmental engineering; Nuclear engineering, by Gupta, A.; Natole, R.; Sanyal, A.; Veilleux, J. [eds.], 921 pages.
- Country of Publication:
- United States
- Language:
- English
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