Xiaojian You¹, Zhen Sun¹, Lei Zhang¹, Weikun Qian¹, Cong Wang¹, Weigang Pang¹, Hongming Li¹, Yingshuang Cui¹, Chen Chen¹, Yue Wang¹, Xiao Wu^2,*

FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.5, 2026, DOI:10.32604/fdmp.2026.081350 - 27 May 2026

Abstract Slug flow poses significant dynamic challenges in multiphase pipeline transport, particularly in complex offshore and Floating Liquefied Natural Gas systems, where conventional one- and two-dimensional models fail to capture the intricate three-dimensional interfacial topologies and transient liquid-film dynamics. To overcome this limitation, the present study develops a three-dimensional transient numerical model based on the coupled level-set and volume-of-fluid (CLSVOF) method within a large eddy simulation (LES) framework, and validates it against high-frequency measurements obtained from a double parallel conductance probe experimental platform. The proposed model successfully resolves phase velocity slip and interfacial morphological evolution, predicting More >

Penghui Zhang^1,2, Nan Lin^2,*, Yang Wang^1,*, Ming Sun², Sixi Zha¹, Zongjie Zhou¹, Chenglin Li³

FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.5, 2026, DOI:10.32604/fdmp.2026.078553 - 27 May 2026

Abstract Erosion-corrosion in refining and chemical plant pipelines remains a persistent integrity concern, particularly in straight sections located downstream of elbows, which are rarely prioritized in inspection programs that typically focus on elbows and tees despite their well-known vulnerability. In these downstream regions, developing flow structures can sustain wall impingement and liquid film formation, leading to progressive material loss that is often underestimated in practice. This work examines a representative industrial pipeline through a combined approach based on computational fluid dynamics (CFD) simulations and controlled experimental validation to resolve the hydrodynamic behavior in the straight pipe… More >

Zheming Cheng^1,*, Xinping Ouyang², Leren Tao², Ke Sun², Zihao Wang²

FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.5, 2026, DOI:10.32604/fdmp.2026.076554 - 27 May 2026

Abstract Balancing heat transfer performance with material cost and refrigerant charge remains a key challenge in split air conditioning systems. To address this issue, the present study proposes a finned-tube heat exchanger with a variable-diameter configuration, combining 5.2 mm and 7.3 mm tubes for use with R290 refrigerant. Three hybrid arrangements are examined against a conventional baseline with uniform 7.3 mm tubes, differing in the number and spacing of the 5.2 mm tubes integrated within the heat exchanger layout, thereby enabling targeted structural and thermal optimization of the indoor unit. An integrated methodology, based on a… More >

Md Al Rifat Anan¹, Donghyeon Ryu², Yu-Lin Shen^1,*

CMES-Computer Modeling in Engineering & Sciences, Vol.147, No.2, 2026, DOI:10.32604/cmes.2026.080371 - 27 May 2026

Abstract The development of surface wrinkles on thin films bonded to compliant substrates is recognized as a form of mechanical instability. While this wrinkling behavior is widely studied when the thin film is under direct compression, much less attention has been devoted to the prediction of wrinkle formation caused by tension and cyclic compression-tension deformations. This work focuses on compression vs. tension-induced wrinkles using a relatively stiff polymeric film on an elastomeric substrate as the model system. Experimental observations show that parallel wrinkles formed during unidirectional compression gradually disappear under reverse loading. When the thin film… More >

Angel Prado^1,*, Alejandro Alañón², Ricardo Castedo³, Anastasio Pedro Santos³, Lina María López³, María Chiquito³

CMES-Computer Modeling in Engineering & Sciences, Vol.147, No.2, 2026, DOI:10.32604/cmes.2026.079804 - 27 May 2026

Abstract This study presents a numerical investigation into the influence of reinforcement layout on the blast response of a reinforced concrete (RC) slab subjected to a close-in explosion. The reference scenario is based on a blast test from the SEGTRANS project using a 15 kg TNT equivalent charge. A validated LS-DYNA model was used, applying the Load Blast Enhanced method and the Continuous Surface Cap Model for concrete behaviour. Forty-nine reinforcement configurations were assessed, all with constant steel mass but varying numbers of longitudinal bars and stirrups. Damage metrics such as eroded elements and internal energy… More >

Zenghua Zhang^1,2, Yanchun Su^1,2, Zhijie Wei^1,2, Wensheng Zhou^1,2, Chen Liu^1,2, Engao Tang^1,2, Yanhong Wang³, Shanshan Li³, Rui Zhang^3,*

Energy Engineering, Vol.123, No.6, 2026, DOI:10.32604/ee.2026.077070 - 27 May 2026

Abstract Addressing the complexity of quality evaluation during the R&D phase of the waterflooding sandstone reservoir numerical simulator (OSIM), this study establishes a comprehensive assessment framework driven by client-side requirements. The novelty of this work lies in the integration of a client-driven 146-indicator hierarchy specifically tailored for iterative simulator R&D. First, a hierarchical software quality evaluation model is constructed, encompassing four primary dimensions and 146 secondary indicators. To mitigate the subjectivity inherent in traditional weight assignment, the Fuzzy Best-Worst Method (FBWM) is employed to determine indicator weights. Subsequently, the Technique for Order Preference by Similarity to… More >

Sheng Lei^1,2,3, Guanglong Sheng^1,2,3,*, Hui Zhao^1,2,3

Energy Engineering, Vol.123, No.6, 2026, DOI:10.32604/ee.2025.073788 - 27 May 2026

Abstract Multi-stage fractured horizontal wells are among the most prevalent technologies in contemporary shale oil development. This article provides a comprehensive overview of several prevalent issues by examining pertinent simulation methods applicable to existing fractured horizontal wells. First, traditional methods primarily concentrate on individual stages of fracturing, shut-in, and production. These stages are relatively isolated and lack continuity. Second, the effects of reservoir stimulation vary under different operational conditions. The conventional dual (or multiple) porosity model is overly idealized, while analytical (or semi-analytical) models often struggle to accurately represent actual fracture geometries and internal fracture-grid characteristics,… More > Graphic Abstract

Jun Wang¹, Qian Fang^1,*, Weiguo He², Yanxin Chen¹, Qizhao You¹

Structural Durability & Health Monitoring, Vol.20, No.3, 2026, DOI:10.32604/sdhm.2025.076570 - 18 May 2026

Abstract This study presents a comprehensive investigation into the deformation mechanisms of existing metro stations subjected to the simultaneous construction of adjacent foundation pits and underground tunnels. A refined three-dimensional numerical modeling framework is developed to simulate the entire construction process, capturing the complex interactions between excavation activities and station structures. The modeling encompasses deep excavation, side-crossing, and overcrossing passage construction, and the staged installation of support systems. Six construction schemes, varying in excavation sequence, interlayer thickness (clear distance), and passageway layout, are systematically analyzed. Field monitoring data are incorporated to validate the numerical models, enhancing… More >

Pengfei Zhao^1,*, Youlin Ye²

Structural Durability & Health Monitoring, Vol.20, No.3, 2026, DOI:10.32604/sdhm.2026.072074 - 18 May 2026

Abstract Under soft soil geological conditions, tunnel engineering disturbances can induce changes in ground surface surcharges and lead to stress redistribution in the surrounding soils. As relatively unfavorable loads during engineering disturbances, ground surface surcharges significantly influence both transverse and longitudinal deformations of shield tunnel structures, resulting in increased ellipticity, segment dislocations, joint openings, and tunnel settlement. This study investigates the effect of two different steel plate reinforcement methods—annular steel plates and cross-joint steel plates—on tunnel structures under surface surcharge loading. Using the Mohr–Coulomb elastoplastic constitutive model, the influence of surface surcharges on shield tunnel segment… More >

Wenqi Zheng^1,2,3, Feng Gao⁴, Hanpeng Wang^1,2,3,*, Xin Wang^1,2,3, Bing Zhang^1,2,3, Yue Niu⁴, Wei Wang^1,2,3, Li Ming⁵, Chunbo Zhou^6,*

FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.4, 2026, DOI:10.32604/fdmp.2026.079913 - 07 May 2026

Abstract As coal extraction advances to greater depths, a refined understanding of the coupled evolution of involved physical effects and mechanisms in gas-bearing coal under excavation-induced disturbances becomes indispensable. In this context, “chain evolution” characterizes the progressive and interdependent interplay among stress redistribution, damage propagation, and seepage adjustment. Building upon a seepage–stress–damage coupling model for gas-bearing coal, and supported by triaxial compression tests for validation, this study explores multifield evolution during roadway excavation across lateral pressure coefficients ξ of 0.5, 0.8, 1.0, 1.2, and 1.5. The results reveal that the lateral pressure… More >