Gas Turbine Erosion

Particle Erosion

Particle Trajectory Simulations on Turbine Blades

High Temperature Erosion Research Lab.

Multi-Phase Flow Studies

-Experimental studies of particle surface interaction

  • Coating and material erosion studies 
  • Particle Rebound Tests

-Particle dynamics in engine components

-Particle trajectory simulations

-Blade erosion predictions

-Turbomachinery performance deterioration

High Temperature Materials Erosion Tunnel

Location: 5997 Center Hill Ave.

Facility Capabilities:

  • Temperatures (ambient – 2000 F)
  •  Impact velocities (60-1800 ft/sec)
  •  Impingement angles (0-90 degrees)
  •  Particles and target materials (various)
  •  Particle loading (various)

Centerhill Erosion Lab

Overview of Erosion Tunnel Facility

Centerhill Erosion Lab

High Temperature Materials Erosion Tunnel

Schematic Diagram of Erosion Tunnel

Schematic Diagram of Erosion Tunnel

The University of Cincinnati (UC) erosion wind tunnel shown schematically in the left figure consists of the following components: particle feeder (A), main air supply pipe (B), combustor (C), particle pre-heater (D), particle injector (E), acceleration tunnel (F), test section (G), and exhaust tank (H). Abrasive particles of a given constituency and measured weight are placed into the particle feeder (A). The particles are fed into a secondary air source and blown into the particle preheater (D), and then to the injector (E), where they mix with the primary air supply (B), which is heated by the combustor (C). The particles are then accelerated via high velocity air in a constant-area steam-cooled duct (F) and impact the specimen in the test section (G). The particulate flow is then mixed with coolant and directed to the exhaust tank. 

As can be seen from the schematic diagram, the tunnel geometry is uninterrupted from the acceleration tunnel throughout the test section in order to preserve the aerodynamics of the flow passing over the samples. Particles impacting the coupon and their impact velocity are calibrated with the tunnel airflow, while the particle impingement angle is controlled through the coupon orientation. The particles are fed into the flow after the test sample reaches equilibrium temperature.