Comparison of Turbulence Models on Erosion Wear Numerical Simulation of Elbow Pipe

The elbow pipes often appear to be worn seriously in liquid-solid two-phase flow. The flow field, erosion rate and serious erosion area of liquid-solid elbow pipe are analyzed numerically using Stand k-ε model, RNG k-ε model and Reynolds stress model (RSM). The results comparison shows that the velocity field and pressure field are basically consistent, but the most serious erosion locations are quite different. For Standard k-ε model and RNG k-ε model, the most serious erosion areas are located at both sides of the elbow intrados, While the elbow outside is worn more seriously for the RSM. Compared with the worn elbow in engineering, RSM is more applicable for serious erosion area prediction of elbow pipe.