The role of sawtooth-shaped nano riblets on nanobubble dynamics and collapse-induced erosion near solid boundary

Rezaee, Sasan; Kadivar, Ebrahim; el Moctar, Ould

doi:10.1016/j.molliq.2024.124947

Journal of Molecular Liquids

2024

DOI: 10.1016/j.molliq.2024.124947

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The role of sawtooth-shaped nano riblets on nanobubble dynamics and collapse-induced erosion near solid boundary

Sasan Rezaee,

Ebrahim Kadivar,

Ould el Moctar

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2024

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Cited by 3 publications

References 64 publications

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Two-dimensional graphyne monolayers as substrate discs of piezoelectric nanogenerators: A hybrid atomistic-continuum model study

Shavikloo,

Esmaeili

2024

Sensors and Actuators A: Physical

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Two-dimensional graphyne monolayers as substrate discs of piezoelectric nanogenerators: A hybrid atomistic-continuum model study

Shavikloo,

Esmaeili

2024

Sensors and Actuators A: Physical

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The effects of wellbore stone materials and fluid density on the shock wave induced by plasma pulse system propagation in rock: An analytical and experimental study

Akbari Nasaji,

Habibi,

Amrollahi

2024

Review of Scientific Instruments

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A pulsed plasma system is a highly efficient tool for linking wells to reservoirs to repair near-wellbore damage and restore production. This research aims to create a computational model and experimental setup to delve into the generation and spread of shock waves from electrical discharge. It also explores the influence of different stone wall materials such as limestone, sandstone, and dolomite, along with varied fluid densities such as saline water and drilling mud. Results show that when an electrical current passes through a metal wire, the wire explosively disintegrates, creating a plasma pulse that applies pressure shock to the stone walls, leading to crack formation. It is important to note that the explosion’s energy can be increased by raising the capacitor’s energy and modifying the circuit’s inductance. Analyzing the impact of fluid density on the shock wave reveals that enhancing the plasma pulse system and attaining higher energy levels can be achieved by using materials with higher viscosity. In terms of stone wall materials, limestone demonstrates superior mechanical stability, dolomite exhibits moderate stability, and sandstone shows relatively lower stability in crack growth.

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Effects of Materials and Riblets on Erosion Mitigation Induced by Multiple Collapses of Cavitation Bubbles

Kadivar,

Rezaee,

Löschner

et al. 2024

Applied Sciences

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The current research investigates the effects of materials 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 (dimensionless). 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 that of 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 the results for 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 use in propellers and hulls in the shipping industry. In summary, the results reveal that riblet-equipped 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 in regards to reducing corrosion intensity.

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The role of sawtooth-shaped nano riblets on nanobubble dynamics and collapse-induced erosion near solid boundary

Cited by 3 publications

References 64 publications

Two-dimensional graphyne monolayers as substrate discs of piezoelectric nanogenerators: A hybrid atomistic-continuum model study

Two-dimensional graphyne monolayers as substrate discs of piezoelectric nanogenerators: A hybrid atomistic-continuum model study

The effects of wellbore stone materials and fluid density on the shock wave induced by plasma pulse system propagation in rock: An analytical and experimental study

Effects of Materials and Riblets on Erosion Mitigation Induced by Multiple Collapses of Cavitation Bubbles

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