Study of the deposit of solid particles on the walls of a ribbed duct under stationary and rotating condition

The two-phase flow in a rib-roughened duct representing the internal cooling channel of a turbine blade is here presented. The flow field was calculated by means of the k-ε-ζ-f elliptic relaxation model and validation against LES data was carried out. The well-validated T-FlowS FV code was used for computations. Particle laden flow is simulated assuming realistic particle characteristics. Particles are transported by carrier flow (here modeled with a steady RANS) using an one-way coupling approach in a Lagrangian framework. Impact and adhesion mechanisms are modeled using the Thornton and Ning approach aiming at identifying the regions where deposit occurs. In the final paper, the influence of rotation on the flow and particle motions will be investigated through RANS aiming at detecting the modification of deposit regions when the particle-laden flow is subjected to centrifugal and Coriolis forces