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Umberto Ravelli¹, Silvia Ravelli^2,*
FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.2, 2026, DOI:10.32604/fdmp.2026.075225 - 04 March 2026
Abstract Aerodynamic research on road cars was reviewed in this work under the thread of reducing drag, with the awareness that this may succeed in effectively decreasing the carbon footprint of transportation. First, a selection of studies was presented to focus on the most important aerodynamic features of the flow around realistic car body shapes. Then, the discussion was organized around three pillars related to passive flow control, active flow control and active aerodynamics. Both experimental and numerical investigations were included to provide a comprehensive overview. A clear distinction was made between simplified and realistic car More >

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REVIEW

Zhuo Pan, Lin Zhu, Yi Xue^*, Hao Xu
FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.2, 2026, DOI:10.32604/fdmp.2026.075809 - 04 March 2026
（This article belongs to the Special Issue: Fluid Dynamics and Multiphysical Coupling in Rock and Porous Media: Advances in Experimental and Computational Modeling)
Abstract Fluid flow through fractured rock masses is a key process controlling the safety and performance of deep geoengineering systems, shaped by the complex interactions of thermal, hydraulic, mechanical and chemical (THMC) fields. This paper presents a systematic review of this subject with special emphasis on the multi-physics governing it. First, we elucidate the interdependent mechanisms and governing equations, highlighting the nonlinear, path-dependent, and evolving nature of the relationship between stress and permeability. Next, mainstream modeling approaches, including equivalent continuum, discrete fracture network (DFN), and dual-porosity/dual-permeability methods, are critically evaluated, and a strategy for model selection… More >

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ARTICLE

Yushe Li^1,#, Peishe Wang^1,#, Suoying He^1,2,*, Chunguan Zhou³, Feiyang Long⁴, Zongjun Long⁴, Maojin Fu⁴, Jinyang Sheng⁴, Zhe Geng⁵, Shuzhen Zhang⁵, Huimin Pang¹, Lin Xia¹, Ghulam Qadir Chaudhary¹, Ming Gao¹
FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.2, 2026, DOI:10.32604/fdmp.2026.077360 - 04 March 2026
（This article belongs to the Special Issue: Fluid Mechanics & Thermodynamics in Renewable Energy and HVAC Systems)
Abstract This study aims to mitigate crosswind-induced performance degradation in Natural Draft Dry Cooling Towers used in power plants by developing and assessing windbreak configurations that enhance ventilation while minimizing additional airflow resistance. Three novel windbreak designs, namely single-windbreak configuration with curved profile, double-windbreak configuration with curved profile, and double-windbreak configuration with inverted curved profile, are proposed accordingly and evaluated against conventional solutions. Three-dimensional numerical models of a 120 m high NDDCT equipped with these windbreaks, together with a conventional Y-shaped windbreak, are developed for systematic comparison. The results demonstrate that windbreak effectiveness strongly depends on… More >

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Adebowale Martins Obalalu^1,*, Abdulazeez Adebayo Usman², Umair Khan³
FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.2, 2026, DOI:10.32604/fdmp.2026.076959 - 04 March 2026
（This article belongs to the Special Issue: Ternary Hybrid Nanofluids with Applications in Fluid Dynamics and Materials Processing)
Abstract Efficient thermal management in porous media is essential for advanced engineering applications, including solar energy systems, electronic cooling, and aerospace thermal control. This study presents a comprehensive analysis of ternary hybrid nanofluids, TiO₂–CdTe–MoS₂ dispersed in water, flowing over a vertical stretching or shrinking surface in a Darcy–Brinkman porous medium. The investigation accounts for the combined effects of magnetohydrodynamics, thermal radiation, viscous dissipation, and internal heat generation. In contrast to previous studies that predominantly focused on single or binary nanofluids, the present work systematically examines the thermal and hydrodynamic performance of ternary hybrid nanofluids, highlighting their enhanced… More >

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Yonghong Deng^1,2, Ming Yang², Liqiong Chen¹, Hongwei Rao¹, Shengguang Li², Changhui Zhou², Yangyang Huang², Zizheng Kong², Xicheng Gao², Chong Di², Ting He^1,*
FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.2, 2026, DOI:10.32604/fdmp.2026.077227 - 04 March 2026
Abstract With the maturation of coalbed methane (CBM) exploitation and the transition into the late stages of dewatering and gas production, liquid loading in gathering pipelines has emerged as a major constraint on productivity and operational stability. Based on real-time field data and gas–liquid physicochemical analyses, this study elucidates the mechanisms governing liquid loading formation under varying temperature, pressure, and water saturation conditions. An HYSYS model is employed to determine the water dew point, while the Turner model is used to evaluate the critical conditions for liquid holdup. The results indicate that gas water saturation exerts… More >

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Hongyun Bai^1,2, Jianxin Xu^1,2,*, Wenbo Shi^1,2, Xiaowei Ma³, Jun Ma³, Shaoyin Zhu³, Hua Wang^1,2
FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.2, 2026, DOI:10.32604/fdmp.2026.076265 - 04 March 2026
Abstract Optimizing pyrolysis processes is critical for improving the efficiency of pyrolysis furnaces. This study presents a strategy to enhance heat transfer through agitation, employing Fluent for detailed numerical simulation of the thermal behavior. The simulation results show strong agreement with experimental measurements of localized fluid temperature rise. Forced convection induced by impeller rotation significantly improves heat transfer between the fluid and the furnace walls, effectively reducing thermal stratification. At an impeller speed of 240 RPM, the axial temperature difference decreases from 200 K to 50 K compared with stationary conditions, while the average heat transfer More >

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Chaoyu Wei¹, Haipeng Zhang¹, Weidong Shi^1,*, Yongfei Yang^1,*, Linwei Tan¹, Xianglong Wu², Yurui Dai¹
FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.2, 2026, DOI:10.32604/fdmp.2026.074543 - 04 March 2026
（This article belongs to the Special Issue: Advances in Fluid Machinery and Fluid Mechanics for Deep-Sea Resource Extraction and Exploitation)
Abstract During high-speed operation, mixed-flow pumps are susceptible to cavitation, which destabilizes the internal flow, increases energy losses, and degrades hydraulic efficiency. To assess the effectiveness of blade perforation as a cavitation-mitigation strategy, in this study several mixed-flow pump models incorporating perforations were developed. Numerical simulations were performed for configurations with circular holes positioned at different locations along the blade leading edge, and the computational results were validated against experimental measurements. The findings indicate that the location of the perforations plays a decisive role in cavitation suppression. Moving from the blade rim toward the hub along More >

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Kunyi Wu¹, Bo Lei¹, Yanhua Qiu¹, Hui Li², Shize Wei¹, Feng Wang¹, Yu Wu^1,*, Liming Zhang^2,*
FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.2, 2026, DOI:10.32604/fdmp.2026.076662 - 04 March 2026
Abstract This study investigates in-station pressure drop mechanisms in a shale gas gathering system, providing a quantitative basis for flow system optimization. Computational fluid dynamics (CFD) simulations, based on field-measured parameters related to a representative case (a shale gas platform located in Sichuan, China) are conducted to analyze the flow characteristics of specific fittings and manifolds, and to quantify fitting resistance coefficients and manifold inlet interference. The resulting coefficients are integrated into a full-station gathering network model in PipeSim, which, combined with production data, enables evaluation of pressure losses and identification of equivalent pipeline blockages. The… More >

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Maolei Cui^1,2,*, Zengmin Lun^1,2, Jie Zhang^1,2, Jun Niu^1,2, Pufu Xiao^1,2
FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.2, 2026, DOI:10.32604/fdmp.2026.075360 - 04 March 2026
（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 To clarify fluid flow mechanisms and establish effective development conditions in continental shale oil reservoirs, a high-temperature, high-pressure steady-state flow system integrated with nuclear magnetic resonance (NMR) technology has been developed. The apparatus combines sample evacuation, rapid pressurization and saturation, and controlled displacement, enabling systematic investigation of single-phase shale oil flow under representative reservoir conditions. Related experiments allow proper quantification of the activation thresholds and relative contributions of different pore types to flow. A movable fluid index (MFI), defined using dual T₂ cutoff values, is introduced accordingly and linked to key flow parameters. The results reveal… More >

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Bo Zeng¹, Junfeng Li¹, Liqing Chen¹, Qiyong Gou¹, Hao Luo², Haiyan Zhu², Xuanhe Tang^2,*
FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.2, 2026, DOI:10.32604/fdmp.2026.069978 - 04 March 2026
（This article belongs to the Special Issue: Fluid and Thermal Dynamics in the Development of Unconventional Resources III)
Abstract Deep shale gas reservoirs in the southern Sichuan Basin are typically characterized by significant horizontal stress anisotropy (expressed as stress difference), variable brittleness–ductility in rock mechanics, and strong heterogeneity. These complex geomechanical conditions lead to pronounced differences in hydraulic fracturing outcomes among wells and sections. To investigate hydraulic fracture propagation and fracturing fluid injection behavior under varying geomechanical settings, true triaxial physical simulation tests were performed on 400 × 400 × 400 mm artificial rock samples. The samples were designed with different media properties based on similarity criteria. A sensitivity analysis was conducted to assess… More >

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