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Bohao Wu^*, Xiuqi Zhang, Haoheng Liu, Yulong Ji
FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.10, pp. 2359-2387, 2025, DOI:10.32604/fdmp.2025.067651 - 30 October 2025
（This article belongs to the Special Issue: Multiphase Fluid Flow Behaviors in Oil, Gas, Water, and Solid Systems during CCUS Processes in Hydrocarbon Reservoirs)
Abstract Geological sequestration of carbon dioxide (CO₂) entails the long-term storage of captured emissions from CCUS (Carbon Capture, Utilization, and Storage) facilities in deep saline aquifers to mitigate greenhouse gas accumulation. Among various trapping mechanisms, dissolution trapping is particularly effective in enhancing storage security. However, the stratified structure of saline aquifers plays a crucial role in controlling the efficiency of CO₂ dissolution into the resident brine. In this study, a two-dimensional numerical model of a stratified saline aquifer is developed, integrating both two-phase flow and mass transfer dynamics. The model captures the temporal evolution of gas saturation,… More >

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Ning Hu, Cunbiao Lee^*
FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.10, pp. 2389-2417, 2025, DOI:10.32604/fdmp.2025.067248 - 30 October 2025
（This article belongs to the Special Issue: Traveling Waves, Impulses and Laminar-turbulent Transitions in Fluid Dynamics Equations)
Abstract The formation, evolution, and dynamics of flow structures in wall-bounded turbulence have long been central themes in fluid-mechanics research. Over the past three decades, Soliton-like Coherent Structures (SCSs) have emerged as a ubiquitous and unifying feature across a wide range of shear flows, including K-type, O-type, N-type, and bypass transitional boundary layers, as well as fully developed turbulent boundary layers, mixing layers, and pipe flows. This paper presents a systematic review of the fundamental properties of SCSs and highlights their fundamental role in multiple transition scenarios. The analysis further explores the connection between SCSs and… More >

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REVIEW

Zhengzheng Cao^1,2,3, Fangxu Guo¹, Wenqiang Wang^2,3,4,*, Feng Du^2,3,4, Zhenhua Li^2,3,4, Shuaiyang Zhang¹, Qixuan Wang¹, Yongzhi Zhai¹
FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.10, pp. 2419-2442, 2025, DOI:10.32604/fdmp.2025.070624 - 30 October 2025
（This article belongs to the Special Issue: Fluid Dynamics and Multiphysical Coupling in Rock and Porous Media: Advances in Experimental and Computational Modeling)
Abstract With the depletion of shallow mineral resources, mining operations are extending to greater depths and larger scales, increasing the risk of water inrush disasters, particularly from confined aquifers intersected by faults. This paper reviews the current state of research on fault-induced water inrushes in mining faces, examining the damage characteristics and permeability of fractured floor rock, the mechanical behavior of faults under mining stress, and the mechanisms driving water inrush. Advances in prevention technologies, risk assessment, and prediction methods are also summarized. Research shows that damage evolution in fractured floor rock, coupled with fluid-solid interactions,… More >

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ARTICLE

Faraj M. Zaid^1,2, Thaar M. Aljuwaya^3,4,*, Muthanna H. Al-Dahhan^1,3,5,*
FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.10, pp. 2443-2471, 2025, DOI:10.32604/fdmp.2025.067557 - 30 October 2025
Abstract This study presents a detailed experimental evaluation of a newly developed mechanistic scale-up methodology for gas-solid fluidized beds. Traditional scale-up approaches typically rely on matching global dimensionless groups, which often fail to ensure local hydrodynamic similarity. In contrast, the new mechanistic method aims to achieve scale-up by matching the radial profiles of gas holdup between geometrically similar beds at corresponding dimensionless axial positions (z/D_c). This approach is based on the premise that when gas holdup profiles align, other key hydrodynamic parameters—such as solids holdup and particle velocity—also become similar. To validate this methodology, experiments were conducted More >

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ARTICLE

Sehrish Bibi^1,*, Vincenzo Minutolo², Obaid Ullah Mehmood³, Renato Zona²
FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.10, pp. 2473-2493, 2025, DOI:10.32604/fdmp.2025.072470 - 30 October 2025
（This article belongs to the Special Issue: Model-Based Approaches in Fluid Mechanics: From Theory to industrial Applications)
Abstract Arterial stenosis is a critical condition with increasing prevalence among pediatric patients and young adults, making its investigation highly significant. Despite extensive studies on blood flow dynamics, limited research addresses the combined effects of nanoparticles and arterial curvature on unsteady pulsatile flow through multiple stenoses. This study aims to analyze the influence of nanoparticles on blood flow characteristics in realistic curved arteries with mild to severe overlapped constrictions. Using curvilinear coordinates, the thermal energy and momentum equations for nanoparticle-laden blood were derived, and numerical results were obtained through an explicit finite difference method. Key findings More >

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ARTICLE

Shuxun Li^1,2, Xinhao Liu^1,2,*, Yu Zhang^1,2, Yu Zhao^1,2
FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.10, pp. 2495-2526, 2025, DOI:10.32604/fdmp.2025.068674 - 30 October 2025
Abstract Hydraulic control valves, positioned at the terminus of pipe networks, are critical for regulating flow and pressure, thereby ensuring the operational safety and efficiency of pipeline systems. However, conventional valve designs often struggle to maintain effective regulation across a wide range of system pressures. To address this limitation, this study introduces a novel Pilot hydraulic valves specifically engineered for enhanced dynamic performance and precise regulation under variable pressure conditions. Building upon prior experimental findings, the proposed design integrates a high-fidelity simulation framework and a surrogate model-based optimization strategy. The study begins by formulating a comprehensive… More >

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104

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ARTICLE

Hailong Chen^1,*, Guanzhen Tao¹, Daijun Wei², Guangyao Ouyang³
FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.10, pp. 2527-2538, 2025, DOI:10.32604/fdmp.2025.069569 - 30 October 2025
（This article belongs to the Special Issue: Model-Based Approaches in Fluid Mechanics: From Theory to industrial Applications)
Abstract Modifications in fuel spray characteristics fundamentally influence fuel–air mixing dynamics in diesel engines, thereby significantly affecting combustion performance and emission profiles. This study explores the operational behavior of RP-5 aviation kerosene/diesel blended fuels in marine diesel engines. A spray visualization platform based on Mie scattering technology was developed to comparatively analyze the spray characteristics, ignition behavior, and soot emissions of RP-5 aviation kerosene, conventional-35# diesel, and their blends at varying mixing ratios (D100H0, D90H10, D70H30, D50H50, D30H70, D0H100). The findings demonstrate that, under constant injection pressure, aviation kerosene combustion results in a more uniform temperature More >

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ARTICLE

Yu Li^1,2,3,*, Jie Bian³, Liang Zhang^2,3, Xuesong Feng³, Jiachen Hu³, Ji Yu³, Chao Zhou³, Tian Lan³
FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.10, pp. 2539-2556, 2025, DOI:10.32604/fdmp.2025.067685 - 30 October 2025
（This article belongs to the Special Issue: Fluid and Thermal Dynamics in the Development of Unconventional Resources III)
Abstract As oil and gas development increasingly targets unconventional reservoirs, the limitations of conventional hydraulic fracturing, namely high water consumption and significant reservoir damage, have become more pronounced. This has driven growing interest in the development of clean fracturing fluids that minimize both water usage and formation impairment. In this study, a low-liquid-content viscoelastic surfactant (VES) foam fracturing fluid system was formulated and evaluated through laboratory experiments. The optimized formulation comprises 0.2% foaming agent CTAB (cetyltrimethylammonium bromide) and 2% foam stabilizer EAPB (erucamidopropyl betaine). Laboratory tests demonstrated that the VES foam system achieved a composite foam… More >

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Feng He^*, Rui Tan, Songlian Jiang, Chao Qian, Chengzhong Bu, Benqiang Wang
FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.10, pp. 2557-2577, 2025, DOI:10.32604/fdmp.2025.070186 - 30 October 2025
（This article belongs to the Special Issue: Multiphase Fluid Flow Behaviors in Oil, Gas, Water, and Solid Systems during CCUS Processes in Hydrocarbon Reservoirs)
Abstract This study introduces a Transformer-based multimodal fusion framework for simulating multiphase flow and heat transfer in carbon dioxide (CO₂)–water enhanced geothermal systems (EGS). The model integrates geological parameters, thermal gradients, and control schedules to enable fast and accurate prediction of complex reservoir dynamics. The main contributions are: (i) development of a workflow that couples physics-based reservoir simulation with a Transformer neural network architecture, (ii) design of physics-guided loss functions to enforce conservation of mass and energy, (iii) application of the surrogate model to closed-loop optimization using a differential evolution (DE) algorithm, and (iv) incorporation of economic… More >

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ARTICLE

Dong Liu¹, Runze Zhang¹, Anjie Hu¹, Na Liu¹, Liu Tang^2,3,*, Xiaozhou Wu⁴, Jun Wang^2,5
FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.10, pp. 2579-2612, 2025, DOI:10.32604/fdmp.2025.070407 - 30 October 2025
（This article belongs to the Special Issue: Fluid Mechanics & Thermodynamics in Renewable Energy and HVAC Systems)
Abstract This study compares two end-cooling systems, convective–radiant combined cooling (FR+FC) and fan coil convection (FC), through continuous experimental investigations, focusing on the impact of window-to-wall ratio (WWR) on indoor thermal comfort, temperature distribution, humidity, and energy consumption. Results show that increasing WWR amplifies indoor temperature fluctuations. While the overall predicted mean vote (PMV) remains within the Level-II comfort range (−1.0 to +1.0), the FC system exhibits pronounced local PMV gradients near west-facing windows, especially at 80% WWR, where transient PMV reaches 1.26 close to the window, 0.89 higher than at the room center. In contrast, More >

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ARTICLE

Junchen Liu¹, Feng Zhou¹, Xiaofeng Lu¹, Xiaojin Zhou², Xianjun He¹, Yurou Du³, Fuguo Xia¹, Junfu Zhang⁴, Weiyi Luo^4,*
FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.10, pp. 2613-2628, 2025, DOI:10.32604/fdmp.2025.069772 - 30 October 2025
（This article belongs to the Special Issue: Fluid and Thermal Dynamics in the Development of Unconventional Resources III)
Abstract In shale gas reservoir stimulation, proppants are essential for sustaining fracture conductivity. However, increasing closing stress causes proppants to embed into the rock matrix, leading to a progressive decline in fracture permeability and conductivity. Furthermore, rock creep contributes to long-term reductions in fracture performance. To elucidate the combined effects of proppant embedding and rock creep on sustained conductivity, this study conducted controlled experiments examining conductivity decay in propped fractures under varying closing stresses, explicitly accounting for both mechanisms. An embedded discrete fracture model was developed to simulate reservoir production under different conductivity decay scenarios, while… More >

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103

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ARTICLE

Mengna Cheng¹, Hao Guo², Feng Cao², Jie Gong¹, Fengshuang Du^1,*
FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.10, pp. 2629-2650, 2025, DOI:10.32604/fdmp.2025.070344 - 30 October 2025
（This article belongs to the Special Issue: Multiphase Fluid Flow Behaviors in Oil, Gas, Water, and Solid Systems during CCUS Processes in Hydrocarbon Reservoirs)
Abstract Produced water reinjection is a common strategy in offshore oilfield operations, yet the presence of solid particles in produced water can lead to localized formation pressure buildup, increasing the risk of rock fracturing and leakage. In this study, we present an integrated experimental and numerical investigation to quantify the effects of particle migration on formation pressure and the spatial diffusion of injected water. Dynamic plugging experiments were performed to systematically examine the influence of injection rate and injection volume on core permeability. Results demonstrate that higher injection rates substantially reduce permeability, and the derived relationship More >

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