The damage evolution of blade coating in the erosion process was studied.Firstly
the flow field was measured;secondly
the erosion process of single solid particles was simulated to propose the concept "Effective erosion region"
allowing to simulate numerically the erosion process of multiple solid particles.Next
the erosion resistance performance of coating materials in the "Effective erosion region" was simulated.The results show the weak coating region and provide life prediction by simulating the erosion process of blade coating with the flow field data and erosion resistance performance parameters.