A Review on Experimental Study of Sediment Erosion in Hydraulic Turbines at Laboratory Conditions

Abstract

Experimental erosion testing of hydro turbine components in laboratory conditions over field testing and simulation testing is a necessity as effects of individual erosion influencing factors like particle size, speed, concentration, angle of attack and behaviour of the eroded material can be studied in close compromise as that with components in actual operating environments. Extensive experimental results have been reported from the past studies from different erosion tests performed. In this paper, recent research and development of a wide range of laboratory scale erosion testing is reviewed. Considering the complexities of developing a setup that replicate the actual erosion behaviour of turbine, a test rig is suggested for future works that closely meet the operating requirements.