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Effects of Materials (Aluminum and Brass) and Bio‐Inspired Trapezoidal Riblets on Mitigation of Erosion Induced by Cavitation Bubble Multiple Collapses
Kadivar, E.; Rezaee, S.; Löschner, U.; el Moctar, O. Effects of Materials and Riblets on Erosion Mitigation Induced by Multiple Collapses of Cavitation Bubbles. Appl. Sci.2024, 14, 6452.
Kadivar, E.; Rezaee, S.; Löschner, U.; el Moctar, O. Effects of Materials and Riblets on Erosion Mitigation Induced by Multiple Collapses of Cavitation Bubbles. Appl. Sci. 2024, 14, 6452.
Kadivar, E.; Rezaee, S.; Löschner, U.; el Moctar, O. Effects of Materials and Riblets on Erosion Mitigation Induced by Multiple Collapses of Cavitation Bubbles. Appl. Sci.2024, 14, 6452.
Kadivar, E.; Rezaee, S.; Löschner, U.; el Moctar, O. Effects of Materials and Riblets on Erosion Mitigation Induced by Multiple Collapses of Cavitation Bubbles. Appl. Sci. 2024, 14, 6452.
Abstract
The current research investigates the effects of material and riblets on cavitation-induced erosion morphology, depth, and cross-sectional area through experimental approaches. To achieve these aims, the erosion of pure aluminum (1xxxAl or Al) and alpha brass (CuZn37 or CZ108) in the presence and absence of bio-inspired sawtooth riblets was examined after exposure to multiple collapses of single cavitation bubbles with a wall distance of 1.8. The results indicate that the erosion morphology resembles a rounded cone with a circular cross-section. Brass provides 21.6% more erosion resistance compared to Al in terms of material properties. Furthermore, the erosion for both Al (depth by 3.8% and width by 18.3%) and brass (depth by 7.9% and width by 27.4%) decreases in the presence of riblets compared to flat surfaces. The greater erosion resistance of brass compared to Al is attributed to the superior mechanical stability of brass, making it a potentially suitable alloy for propellers and hulls. In sum, the results reveal that riblet-provided materials with high mechanical durability are promising erosion-resistant materials for the shipping industry. However, the potential for chemical reactions in a cathodic environment should be addressed to provide a comprehensive perspective on reducing corrosion intensity.
Keywords
Cavitation; Erosion; Pure aluminum (1xxxAl or Al); Alpha brass (CuZn37 or CZ108); Bio-inspired sawtooth riblet
Subject
Engineering, Marine Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
