Edward Frederick Sverdrup

Fan erosion control

This paper deals with ways of controlling fly-ash erosion in coal-fired power plant fans. Computer calculations of particle trajectories through fans and of the resulting erosion rates are made for fans of varying designs to establish their relative erosion tolerance. An experimental study of the erosivity of fly-ash from burning bituminous and subbituminous coals and lignites is presented. The factors in obtaining highly erosion-resistant coatings, and the erosion resistance of advanced fly-ash armoring systems are examined.

Multistage Turbine Erosion

This paper presents a computer package developed to calculate erosion damage in multistage turbines that operate with particle-laden gases. Erosion predictions based on calculated trajectories of particles are made either by using semiempirical erosion formula or through direct interpolation of existing experimental data. Also presented is an application of this package to a four-stage turbine that shows that the first and second stage rotor blades and the second stage stator blades may be subject to critical erosion damage.Copyright