Gitter-Monte-Carlo-Modellierung der Erosion durch feste Partikel
Beschichtungs- und Oberflächentechnik
Theoretische Chemie: Moleküle, Materialien, Oberflächen
Zusammenfassung der Projektergebnisse
Erosion of metallic surfaces due to the permanent impact of high-speed water droplets or collapse of cavitation bubbles is a significant concern in diverse industrial applications like blades in wind or steam turbines. In the initial stage of water droplet erosion, there is an incubation regime with negligible mass loss whose duration is strongly dependent on water droplet sizes and velocities, the initial state of the surface, and the material properties of the target. The prediction of the incubation period duration is one of the main topics of research in the field. In this project, the interaction of the water droplets with a metallic surface was simulated using a hybrid Smoothed-Particle Hydrodynamics/Finite Element Method modeling scheme. The effect of multiple random impacts on representative target areas for certain ranges of impact angles and velocities was studied using a combination of simple material and damage models for the target surface of Ti-6Al-4V titanium alloy. The simulation was able to reproduce the main dependencies of the incubation regime and the first stages of water droplet erosion on the impact angle and velocity as reported in the literature. This framework can be considered as a foundation for more advanced models with the goal of a better understanding of the physical mechanisms behind the incubation regime of surface erosion in order to devise strategies to extend it in real applications.
Projektbezogene Publikationen (Auswahl)
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Hybrid Smoothed-Particle Hydrodynamics/Finite Element Method Simulation of Water Droplet Erosion on Ductile Metallic Targets. Metals, 13(12), 1937.
Mora, Alejandro; Xu, Ruihan & Schmauder, Siegfried
