Simulation of Internal Environmental Conditions Within Rock Wool Insulation: Implications for Corrosion Under Insulation in Piping Systems DOI Open Access

Jiangshun Wu,

Wenchao Li, Feifei Huang

et al.

Coatings, Journal Year: 2025, Volume and Issue: 15(5), P. 571 - 571

Published: May 10, 2025

Rock wool is widely used in industrial piping systems for its excellent thermal insulation properties, but porous structure allows water infiltration that can lead to corrosion under (CUI) on metal pipe surfaces. In order investigate how into the insulated pipeline system creates a corrosive environment, study flow behavior of fluids media was conducted. Experiments were performed measure velocity and pressure drop along three principal directions—axial, radial, circumferential. These measurements enabled derivation specific viscous inertial resistance coefficients, which characterize through rock structure. The results indicated parameters change over time with repeated use, particularly after dry–wet cycles. experimentally derived incorporated both small-scale large-scale three-dimensional computational fluid dynamics (CFD) models simulate transport within layer. Validation experiments real wool-insulated confirmed predictive accuracy CFD simulations capturing movement insulation. model further analyzed influence inlet velocity, aging, inclination development environmental conditions CUI.

Language: Английский

Research Progress on Micro/Nanopore Flow Behavior DOI Creative Commons
Jinbo Yu, Meng Du, Yapu Zhang

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(8), P. 1807 - 1807

Published: April 17, 2025

Fluid flow in microporous and nanoporous media exhibits unique behaviors that deviate from classical continuum predictions due to dominant surface forces at small scales. Understanding these microscale mechanisms is critical for optimizing unconventional reservoir recovery other energy applications. This review provides a comparative analysis of the existing literature, highlighting key advances experimental techniques, theoretical models, numerical simulations. We discuss how innovative micro/nanofluidic devices high-resolution imaging methods now enable direct observation confined phenomena, such as slip flow, phase transitions, non-Darcy behavior. Recent models have clarified scale-dependent regimes by distinguishing effects macroscopic Darcy flow. Likewise, advanced simulations—including molecular dynamics (MD), lattice Boltzmann (LBM), hybrid multiscale frameworks—capture complex fluid–solid interactions multiphase under realistic pressure wettability conditions. Moreover, integration artificial intelligence (e.g., data-driven modeling physics-informed neural networks) accelerating data interpretation modeling, offering improved predictive capabilities. Through this review, adsorption layers, interactions, pore heterogeneity, are examined across studies, persistent challenges identified. Despite notable progress, remain replicating true conditions, bridging fully characterizing interface dynamics. By consolidating recent progress perspectives, not only summarizes state-of-the-art but underscores remaining knowledge gaps future directions micro/nanopore research.

Language: Английский

Citations

0
Influence of the Void Structure on Thermal Performance in HGM/ER Composites DOI Creative Commons
Yu Ding, Zhuo Dong, Hong Xu

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(8), P. 2073 - 2073

Published: April 17, 2025

The heat transfer mechanism of hollow glass microsphere/epoxy resin composites (HGM/ER) is intricate, and the formation void structures during material preparation complicates prediction thermal conductivity. To investigate microscopic mechanisms HGM/ER materials with analyze impact variables on overall performance, this study addresses issue low packing density poor uniformity in traditional cellular unit structures. An improved random sequential adsorption (RSA) algorithm proposed, increasing upper limit particle fill rate by 25% relative to RSA algorithms. Benveniste equivalent microsphere conductivity model selected for performance simulation, demonstrating its high correlation three-component (air, glass, resin), a maximum error only 1.32%. A classification method types categorizing them into interfacial free voids. are investigated under different voids levels types, it was found that effect 60% higher than Based measured material, provides reference convenient practical engineering applications composites.

Language: Английский

Citations

0
Insight into the permeability effect on forced convective heat transfer characteristics in porous media based on the pore-scale numerical study DOI

Mingsheng Yang,

Dong Wang, Zheming Dong

et al.

International Communications in Heat and Mass Transfer, Journal Year: 2025, Volume and Issue: 165, P. 109004 - 109004

Published: May 3, 2025

Language: Английский

Citations

0
Simulation of Internal Environmental Conditions Within Rock Wool Insulation: Implications for Corrosion Under Insulation in Piping Systems DOI Open Access

Jiangshun Wu,

Wenchao Li, Feifei Huang

et al.

Coatings, Journal Year: 2025, Volume and Issue: 15(5), P. 571 - 571

Published: May 10, 2025

Rock wool is widely used in industrial piping systems for its excellent thermal insulation properties, but porous structure allows water infiltration that can lead to corrosion under (CUI) on metal pipe surfaces. In order investigate how into the insulated pipeline system creates a corrosive environment, study flow behavior of fluids media was conducted. Experiments were performed measure velocity and pressure drop along three principal directions—axial, radial, circumferential. These measurements enabled derivation specific viscous inertial resistance coefficients, which characterize through rock structure. The results indicated parameters change over time with repeated use, particularly after dry–wet cycles. experimentally derived incorporated both small-scale large-scale three-dimensional computational fluid dynamics (CFD) models simulate transport within layer. Validation experiments real wool-insulated confirmed predictive accuracy CFD simulations capturing movement insulation. model further analyzed influence inlet velocity, aging, inclination development environmental conditions CUI.

Language: Английский

Citations

0