14th European Conference on Turbomachinery Fluid dynamics & Thermodynamics
Centrifugal fans with cambered plates are characterized by large regions of flow separation and recirculation even at design point, which affect the particle dynamics and render the erosion prediction more complex. In this study the Lagrangian approach is used to track sand particles and determine the impacts and erosion densities. The results show strong effects of particle size and concentration and operating conditions on the particle dynamics and erosion development. Non-uniform distributions of erosion density are observed over the impeller blade pressure side and hub and the volute. The revealed regions of extreme erosion densities may help to select an adequate coating for this centrifugal fan.