Related Experiment Video
Updated: Aug 16, 2025
09:13
Experimental Multiscale Methodology for Predicting Material Fouling Resistance
1.5K
Preliminary Assessment of Asymmetric Triangular Riblet Microstructures for Drag Deduction and Fouling Resistance:
Benjamin W Hamilton1,2, Remus O Tutunea-Fatan1,2, Evgueni V Bordatchev1,2
1Department of Mechanical and Materials Engineering, Western University, London, ON N6A 6B9, Canada.
Micromachines
|December 23, 2022
Summary
This study reveals that fish-scale-inspired microgrooves can reduce drag by 9.1% on underwater surfaces. This novel microtopography also shows promising fouling resistance, correlating particle size with surface performance.
Area of Science:
- Biomimetics and Fluid Dynamics
- Surface Science and Engineering
Background:
- Organisms exhibit natural resistance to contaminant accumulation.
- Understanding fouling resistance mechanisms is crucial for marine applications.
- This study investigates the link between drag reduction and fouling resistance.
Purpose of the Study:
- To explore the correlation between drag reduction and fouling resistance for underwater surfaces.
- To design and test a novel microtopography inspired by fish scales.
- To optimize microgroove dimensions for enhanced performance.
Main Methods:
- Utilized Large Eddy simulations for parametric study of microgroove dimensions.
- Fabricated functional samples using multi-axis micromachining with diamond tooling.
- Assessed surface quality via optical microscopy and profilometry.
- Evaluated fouling resistance through exposure to contaminated water flow.
Main Results:
- Achieved a 9.1% drag reduction compared to a flat reference surface.
- Demonstrated a correlation between particle size and the fouling resistance of the microstructured surface.
- Confirmed the effectiveness of the fish-scale-inspired microgroove design.
Conclusions:
- The developed microtopography offers significant drag reduction.
- A relationship exists between particle size and fouling resistance on microstructured surfaces.
- Biomimetic designs show potential for improving underwater surface performance.
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