Erosion study in turbomachinery affected by coal and ash particles: Phase I. Interim report, March 1, 1978--May 31, 1978

Technical Report · Thu Jun 01 04:00:00 EDT 1978

DOI:https://doi.org/10.2172/6721959· OSTI ID:6721959

Tabakoff, W.

Turbomachinery operating with a working fluid containing coal ash particles is exposed to erosion. The problem of predicting erosion in the rotating and stationary balde rows is complex. Basic research work is necessary to identify the significant factors involved in such erosion and to quantify their effects. Initial tests in the cold erosion wind tunnel facility have yielded results useful in predicting the erosion characteristics of coal ash. The influence of particle impact angle on the erosion of 2024 aluminum alloys, 6Al-4V titanium alloys and 304 stainless steel for different angles of attack and different particle velocities was experimentally determined. Using this data, basic equations have been developed which may predict the erosion of ductile alloys. The design and construction of a ''high temperature wind tunnel'' has been completed and is in operation for erosion testing of various target materials. This facility has the capability of providing two phase flow at subsonic velocities as high as 1000 ft. per second and at temperatures between ambient and 2,000/sup 0/F. To date, erosion data has been obtained for three target materials at different particle velocities, impingement angles and target temperatures.

• Research Organization: Cincinnati Univ., OH (USA). Dept. of Aerospace Engineering and Applied Mechanics
• OSTI ID: 6721959
• Report Number(s): FE-2465-7
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
20 FOSSIL-FUELED POWER PLANTS
200104* -- Fossil-Fueled Power Plants-- Components
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM ALLOYS
ASHES
BENCH-SCALE EXPERIMENTS
CARBONACEOUS MATERIALS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COAL
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
ENERGY SOURCES
EROSION
FOSSIL FUELS
FUELS
GAS TURBINES
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
NICKEL ALLOYS
PARTICLES
RESIDUES
STAINLESS STEEL-304
STAINLESS STEELS
STEELS
TEST FACILITIES
TITANIUM ALLOYS
TUNNELS
TURBINE BLADES
TURBINES
TURBOMACHINERY
WIND TUNNELS