A FAST AND FULLY RESOLVED EROSION MODEL

Particle erosion in pipeline elbows undermines the integrity and service life of fluid-transport infrastructure. We present the first GPU-native framework that couples a fully resolved lattice Boltzmann fluid solver with per-particle CFD–DEM and an industrial DNV erosion model, delivering practical engineering runtimes. Simulating a 76 mm stainless-steel elbow (r/D = 1.5) carrying 300 µm sand in air at 27 m s⁻¹, the method completed 5 s of physical time in 138 min on a single NVIDIA RTX 3090. The predicted erosion profile qualitatively captures the characteristic outer-bend wear band observed in experiments. This framework enables fast and high-fidelity design optimization of erosion-resistant pipeline components.