Authors: Yufeng Li Peigang Yan Wanjin Han
Publish Date: 2009/11/25
Volume: 18, Issue: 4, Pages: 313-320
Abstract
Solid particle erosion SPE in an ultrasupercritical steam turbine control stage with block configuration is investigated numerically based on the finite volume method and the fluidparticle coupling solver We apply the particle discrete phase model to model the solid particles flow and use the Euler conservation equations to solve the continuous phase The investigation is focused on the influence of the solid particle parameters such as particle diameter particle velocity and particle trajectory on the erosion rate of the stator and rotor blade surface in unsteady condition The distributions of the highly eroded zone on the stator and rotor blade surfaces are shown and discussed in detail according to the mechanism of solid particle/blade wall interaction We obtain that the erosion rate of the vane blade is sensitive to the fluctuation of the potential flow field and the smaller particle has a greater impact on the erosion distribution of rotor blade The erosion rate does not entirely depend on the diameter size of the solid particle
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