Trajectories of ash particles through a coal-burning gas turbine

Conference · Fri Jun 01 04:00:00 EDT 1984 · Am. Soc. Mech. Eng., (Pap.); (United States)

OSTI ID:6429606

Beacher, B; Tabakoff, W

A three-dimensional algorithm was previously developed to compute more accurate particle trajectories through turbomachinery blade rows. The capabilities of this algorithm are demonstrated in this paper with trajectory analyses through a coal-burning gas turbine developed by the Bureau of Mines. This five-stage axial turbine contains three-dimensional variations in both the geometry and the gas flow field that have a significant effect upon the trajectories of small (10 micron) coal ash particles. The trajectory analyses performed through the first three blade rows describe particle motion similar to that implied by the erosion patterns observed after testing. Particle impacts are predicted in the regions of the blade surfaces that experienced erosion. Particle impact characteristics of angle and velocity correlate qualitatively with the relative amounts of erosion observed among different regions of the blade surfaces.

• Research Organization: Department of Aerospace Engineering and Applied Mechanics, University of Cincinnati, Cincinnati, Ohio
• OSTI ID: 6429606
• Report Number(s): CONF-840611-
• Conference Information: Journal Name: Am. Soc. Mech. Eng., (Pap.); (United States) Journal Volume: 84-GT-122
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200104* -- Fossil-Fueled Power Plants-- Components
AERODYNAMICS
ALGORITHMS
ASHES
COAL-FIRED GAS TURBINES
EROSION
FLUID MECHANICS
GAS TURBINES
MACHINERY
MATHEMATICAL LOGIC
MECHANICS
PARTICLES
RESIDUES
THREE-DIMENSIONAL CALCULATIONS
TRAJECTORIES
TURBINE BLADES
TURBINES
TURBOMACHINERY
VELOCITY