Molecular dynamics study of carbon dioxide desublimation on surfaces with different hydrophobicity

Energy, Journal Year: 2025, Volume and Issue: unknown, P. 134972 - 134972

Published: Feb. 1, 2025

Language: Английский

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Prediction of Dynamic Wetting and Encapsulation Mechanisms between Microdroplets and Rough Coal Dust Particles

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Coal dust poses a severe threat to workers' health, frequently causes accidents, and leads pneumoconiosis. As the mainstream method of suppression, wet spraying has attracted considerable attention due its efficiency. Understanding dynamic wetting encapsulation mechanisms between fog droplets coal particles is crucial for optimizing fine water mist removal technology, especially removing respirable smaller than 7 μm. However, studies on adhesion behavior impacting rough at microscopic scale are insufficient. Therefore, we adopted numerical simulation CLSVOF mesh deeply analyze collision micrometer from perspectives impact velocity, particle size ratio, roughness. The research indicated that when θ ≥ 1, FMES V = 20 m/s AEO9 30 can effectively encapsulate dust, with areas A 0.98 0.99, respectively. Furthermore, explored correlation established optimal discriminant formulas rebound-encapsulation critical equations. Moreover, greater protrusions surface retention initial gas film. provide theoretical guidance spray conditions, enhancing process parameter ranges practical use. They also have significant implications development droplet research.

Language: Английский

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Microstructure and Corrosion Resistance of Ni‐Cr‐Mo‐Si/Cr₃C₂ Coatings Prepared by Laser Cladding

Materials and Corrosion, Journal Year: 2025, Volume and Issue: unknown

Published: April 29, 2025

ABSTRACT This paper enhances the corrosion resistance of Q235A steel in a seawater environment by employing laser cladding technology to prepare Ni‐Cr‐Mo‐Si/ x Cr 3 C 2 ( = 0, 5, 15 wt%) hydrophobic coatings on its surface. The results indicate that introduction substantially refines microstructure coating and forms additional reinforcing phases, primarily including 23 6 , Ni C, 1.12 2.88 . addition an appropriate amount significantly contributed enhanced formation hard phases. Specifically, when content is 15%, average hardness reached maximum 395.2 HV 0.5 Combining wettability tests with electrochemical results, Ni‐Cr‐Mo‐Si/Cr show lower surface energy, improved hydrophobicity, reduced rates. When reaches synergistic effect hydrophobicity carbides optimized coating. Therefore, this reveals multifaceted roles refining improving resistance.

Language: Английский

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New explicit models for maximum spread of impacting drops on a solid surface using symbolic regression approach

Chemical Engineering Science, Journal Year: 2025, Volume and Issue: unknown, P. 121739 - 121739

Published: May 1, 2025

Language: Английский

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