Hydrodynamics of erosion of heat exchanger tubes in fluidized bed combustors
The hydrodynamics of fluidization for two thin ''two-dimensional'' fluidized beds, one containing a centrally located rectangular obstacle and the other containing three square tubes roughly approximating a portion of a fluidized bed combustor (FBC), was solved using the FLUFIX/MOD2 computer program. The monolayer energy dissipation erosion model extended to include solids viscous stress was compared with the Finnie erosion model. Hydrodynamic and erosion convergence studies were performed for the first bed. Computed erosion rates from the monolayer energy dissipation erosion model compare more favorably for both beds with available erosion data than those from the Finnie erosion model. 27 refs., 15 figs.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5328904
- Report Number(s):
- CONF-871113-6; ON: DE88005974
- Country of Publication:
- United States
- Language:
- English
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Erosion calculations in a two-dimensional fluidized bed
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Related Subjects
014000* -- Coal
Lignite
& Peat-- Combustion
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
CARBONACEOUS MATERIALS
COAL
COMBUSTORS
COMPUTER CALCULATIONS
COMPUTER CODES
DATA
DISSIPATION FACTOR
ENERGY
ENERGY SOURCES
EROSION
EXPERIMENTAL DATA
F CODES
FLUID FLOW
FLUID MECHANICS
FLUIDIZATION
FLUIDIZED BED HEAT EXCHANGERS
FLUIDIZED-BED COMBUSTORS
FOSSIL FUELS
FUELS
HEAT EXCHANGERS
HYDRODYNAMICS
INFORMATION
KINETIC ENERGY
MATERIALS
MATHEMATICAL MODELS
MECHANICS
NUMERICAL DATA
PARTICLE SIZE
POROSITY
SIZE
STRESSES
TUBES
VISCOSITY
VISCOUS FLOW
WEAR