Third M.I.T. Conference on Computational Fluid and Solid Mechanics June 14–17, 2005  

Multi-physics simulation of sand-erosion phenomena on turbine blade

Masaya Suzuki, Kazuyuki Toda, Makoto Yamamoto*
Department of Mechanical Engineering, Tokyo University of Science, 1–3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan

  Full Text
This paper presents a newly developed numerical procedure to predict three-dimensional sand-erosion phenomena. It is well known that sand erosion is a typical multi-physics problem, i.e. turbulent flow field, particle motions and wall deformations, among others, interact. In the present code, in order to simulate this phenomenon, turbulent flow field, particle trajectories and amount of erosion on an eroded wall are calculated repeatedly. The gas-particle two-phase turbulent flow around a turbine blade is computed to clarify sand-erosion phenomena on the turbine blade. The numerical results indicate that sand erosion occurs severely around the leading edge and on the pressure surface, the rebounding particles cause the mechanical damage on the suction surface, and the aerodynamic performance deteriorates with proceeding sand erosion.

Keywords:  Multi-physics simulation; Computational fluid dynamics; Sand erosion; Turbine blade; Three-dimensional computation

* Corresponding author. Tel.: +81 3 5228 8362; Fax: +81 3 3260 4291; E-mail: