Numerical Eulerian modeling of erosion in blinded T-Bends: A parametric study

Abstract

Pneumatic conveying systems, while offering design flexibility through fittings and bends, are susceptible to erosion within these components, compromising system integrity. This study focuses on erosion prediction and mitigation within blinded T-bends using numerical simulations. An Eulerian-Eulerian approach was adopted to model the gas-solid two-phase flow, with an erosion model based on monolayer energy dissipation employed to quantify erosion rates. Numerical results were validated through experimental data. A parametric study was conducted to investigate the influence of air mass flow rate (0.025–0.07 kg/s), particle mass flow rate (1–3 kg/s), and blind end length (L/D = 0.5, 1, 1.5) on erosion. Results indicate a positive correlation between erosion rate and both air and particle mass flow rates, emphasizing the need for optimized airflow conditions. Conversely, increasing the blind end length was found to reduce erosion. This research provides valuable insights for designing pneumatic conveying systems with enhanced durability and efficiency.