Computational fluid dynamics simulation of two-phase flow in 90° bends

This thesis uses Computational Fluid Dynamics (CFD) to illustrate behaviors of a well-dispersed dilute particle-air flow inside a 90° bend with various radii of curvature. The CFD software used is Fluent and the scheme used was Eulerian Model solved in 3-dimensional, steady-state condition. Models of bends with three different radii of curvature has been used along with a sharp bend or blind tee. Behaviors of interest are pattern of solid impingement within different models, velocity gradients, and the secondary flow immediately downstream of the bends. The results from the simulation are compared to experimental data obtained from other referencing articles. Upon comparison to the experimental data, CFD has accurately predicted all the aforementioned behaviors. Also, it was found that the impingement of particles does not directly translate to where the particles would deposit especially in smooth bends.