Physics of Fluids最新文献

A transformer-based unified deep learning framework for spatiotemporal dynamics modeling from fluid to fluidized bed 基于变压器的流体到流化床时空动力学建模统一深度学习框架

2区工程技术

Physics of Fluids Pub Date : 2026-02-01 DOI: 10.1063/5.0302829

Tingting Liu, Yuanye Zhou, X. Y. Chen

{"title":"A transformer-based unified deep learning framework for spatiotemporal dynamics modeling from fluid to fluidized bed","authors":"Tingting Liu, Yuanye Zhou, X. Y. Chen","doi":"10.1063/5.0302829","DOIUrl":"https://doi.org/10.1063/5.0302829","url":null,"abstract":"Dynamic spatiotemporal modeling of fluids and fluidized beds is vital for enhancing process control and product quality in industrial applications. However, the complexity and nonlinear dynamics of spatiotemporal evolving features in these systems present major challenges for developing unified predictive models. In this work, a local interaction and relative position augmented transformer (LIRT), which combines the local interaction module (LIM) and relative positional encoding (RPE), is proposed to address this issue. LIRT consistently outperforms transformer in capturing nonlinear dynamics across datasets covering laminar, turbulent, and gas–solid two-phase flows. The learning dynamics of models are investigated and compared using signal-to-noise ratio and geometric complexity measures. Furthermore, the contributions of LIM and RPE in improving predictive accuracy are quantitatively analyzed via Shapley game theory, respectively. These findings suggest that LIRT is a generalizable and interpretable solution for spatiotemporal modeling in fluid-related systems, with potential applications in a wide range of scientific and industrial domains.","PeriodicalId":20066,"journal":{"name":"Physics of Fluids","volume":"38 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147880341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydraulic pulsation for enhanced oil recovery in high-water-cut sandstone reservoirs 水力脉动提高高含水砂岩油藏采收率

2区工程技术

Physics of Fluids Pub Date : 2026-01-01 DOI: 10.1063/5.0285411

Feipeng Wu, Y. H. Zhang, Zhihao Jiang, Jing Liu, Yang Luo, Peng Wang, C. Wang, G. Zhang

{"title":"Hydraulic pulsation for enhanced oil recovery in high-water-cut sandstone reservoirs","authors":"Feipeng Wu, Y. H. Zhang, Zhihao Jiang, Jing Liu, Yang Luo, Peng Wang, C. Wang, G. Zhang","doi":"10.1063/5.0285411","DOIUrl":"https://doi.org/10.1063/5.0285411","url":null,"abstract":"In high water-cut sandstone reservoirs, improving microscopic sweep efficiency is critical for enhancing oil recovery. Hydraulic pulsation generates pressure waves that induce pore dilation between injection and production wells, disrupting interfacial equilibrium at the pore scale. This study systematically optimizes key operational parameters—amplitude, frequency, and timing—to increase displacement efficiency. Core-flooding experiments establish quantitative relationships between these parameters and incremental oil recovery. The results identify an optimal frequency of 1.0 Hz for effective wave energy superposition and a critical amplitude threshold (approximately 2.0 ml·min−1 at laboratory scale), beyond which incremental recovery plateaus due to exacerbated channeling. This critical amplitude correlates with a capillary number criterion (Ca &gt; 10−6), while the optimal frequency corresponds to a Womersley number of approximately 0.32. A simplified fluid–solid coupling model is developed to predict parameter effects. Field application under scaled conditions (0.025 Hz, 3 MPa amplitude) increased well-group oil production by 45.5%, validating the methodology. This work provides a theoretical and practical framework for optimizing hydraulic pulsation to enhance oil recovery in mature sandstone reservoirs.","PeriodicalId":20066,"journal":{"name":"Physics of Fluids","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147882764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Morphological evolution of electrified droplet: From fingering instability to Coulomb explosion 带电液滴的形态演化：从指指不稳定到库仑爆炸

2区工程技术

Physics of Fluids Pub Date : 2026-01-01 DOI: 10.1063/5.0304599

Daorui Wang, Junfeng Wang, Dongbao Wang, Hang Yang, Jian Gao, Rui Yuan

{"title":"Morphological evolution of electrified droplet: From fingering instability to Coulomb explosion","authors":"Daorui Wang, Junfeng Wang, Dongbao Wang, Hang Yang, Jian Gao, Rui Yuan","doi":"10.1063/5.0304599","DOIUrl":"https://doi.org/10.1063/5.0304599","url":null,"abstract":"Alternating current (AC) electric fields have the potential to induce complex morphological transitions in liquid–liquid systems. In this paper, the instability evolution of the charged methanol droplets in oleic acid under non-uniform AC electric field is investigated by using high-speed imaging. It is found that charged droplets experienced various morphological transitions induced by the AC electric field. For low electric Bond number (BoE), a finger-shaped instability is initiated from the droplet, followed with finger growth and subsequent branching. With the increase in electric field strength, novel morphologies of stretched bottom membrane and radially ejected annulus-shaped film emerge while an explosive Coulomb breakup is found at extremely high field strengths. Throughout the range of instabilities, a transition from disordered to highly ordered polygonal droplet contours is found to be driven by the bifurcation effect in the internal electrohydrodynamics (EHD) flow. Moreover, the growth rate and characteristic wavelength of the instabilities exhibit saturation at high BoE. This nonlinear effect is attributed to the dominance of charge convection, which limits the local surface charge density at the finger tips. Overall, the non-uniform AC electric field provides a method for regulating multi-scale fluid interface morphology in high-viscosity-ratio fluids.","PeriodicalId":20066,"journal":{"name":"Physics of Fluids","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147914109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simulation of bubbly flow in non-Newtonian fluids using computational fluid dynamics and population balance model based on the entire turbulent energy spectrum 基于全湍流能谱的计算流体动力学和种群平衡模型模拟非牛顿流体中的气泡流动

2区工程技术

Physics of Fluids Pub Date : 2026-01-01 DOI: 10.1063/5.0303266

Xiaokai Yang, Dawei Qu, Tianyuan Xia, Yongfeng Liu

{"title":"Simulation of bubbly flow in non-Newtonian fluids using computational fluid dynamics and population balance model based on the entire turbulent energy spectrum","authors":"Xiaokai Yang, Dawei Qu, Tianyuan Xia, Yongfeng Liu","doi":"10.1063/5.0303266","DOIUrl":"https://doi.org/10.1063/5.0303266","url":null,"abstract":"To investigate the effects of interfacial force models and the coalescence and breakup models for bubbly flow simulation in non-Newtonian fluids, visualization experiments were conducted in a rectangle bubble column. Particle image velocimetry and shadowgraphy were employed to measure bubbly flow in shear-thinning fluids. By extending the kernel functions to the entire turbulent energy spectrum, the simulation accurately captured bubble coalescence and breakup behaviors, leading to improved predictions of bubble size distribution. The results indicate that the Liao and Lehr models underestimated bubble coalescence frequency, while the Luo model overestimated it. The Prince–Blanch model provided the most accurate description of bubble size and distribution. The primary mechanisms driving bubble coalescence in the system were identified as buoyancy-driven motion, wake entrainment, and viscous shear. A comparison of drag force models developed for non-Newtonian fluids in previous literature revealed that, at low superficial gas velocities, the differences in predicted velocity fields and bubble sizes among various drag models were minimal. However, the HosenB and Li models predicted larger liquid velocity. As the superficial gas velocity increased, these discrepancies became more pronounced, with all models except HosenB underestimating the velocity. Additionally, other interfacial forces, including lift force, turbulent dispersion force, and wall lubrication force, were compared, revealing that lift force and turbulent dispersion force significantly influenced the simulation outcomes.","PeriodicalId":20066,"journal":{"name":"Physics of Fluids","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147906252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influencing mechanism of buoyancy-induced micro-deformation on bubble horizontal transport along conical surfaces 浮力微变形对气泡沿锥面水平输送的影响机制

2区工程技术

Physics of Fluids Pub Date : 2025-12-01 DOI: 10.1063/5.0280606

Xiang Gao, Hongyang Ning, Y. Z. Song, Patrick G. Verdin, Fujian Zhang, Zhongqiang Zhang

{"title":"Influencing mechanism of buoyancy-induced micro-deformation on bubble horizontal transport along conical surfaces","authors":"Xiang Gao, Hongyang Ning, Y. Z. Song, Patrick G. Verdin, Fujian Zhang, Zhongqiang Zhang","doi":"10.1063/5.0280606","DOIUrl":"https://doi.org/10.1063/5.0280606","url":null,"abstract":"Superhydrophobic conical surfaces exhibit significant potential in microfluidic manipulation and interfacial engineering due to their unique wettability and geometric constraints. However, previous studies have focused on steady-state bubble transport capacity on cone surfaces, overlooking the critical role of bubble morphology evolution in dynamic performance. Herein, a fluorinated silica nanoparticle suspension was synthesized and applied via spray-coating technology onto additively manufactured conical substrates, achieving simultaneous superhydrophobicity (water contact angle &gt;150°) and exceptional bubble adhesion characteristics. Four stages of bubble transport on these surfaces were identified: (1) bubble-cone contact, (2) deformation and spreading, (3) maximum deformation and transition, and (4) stable transportation. A comparative analysis of bubble transport morphology across conical surfaces reveals that the transition stages 2 and 3, marked by maximum deformation and interfacial instability, play a pivotal role in determining overall transport efficiency. These observations were validated by COMSOL simulations, which showed consistent deformation times and revealed how bubble morphology influences migration velocity and pressure distribution. Notably, the double-cone structure enhanced transport efficiency by 62% over the single-cone design by simultaneously suppressing vertical bubble deformation and enhancing interfacial fluidity during the transition stages. Increasing the surface contact angle can enhance bubble transport velocity, whereas an increase in fluid viscosity slightly reduces the velocity. Simulations also show that cone arrangement strongly affects bubble transport, with vertical double-cones fastest and 30° configurations slowest. These findings offer practical insights for optimizing microfluidic devices and bubble collection systems, such as gas–liquid separators or microreactors, requiring precise hydrodynamic control.","PeriodicalId":20066,"journal":{"name":"Physics of Fluids","volume":"37 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147921643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and properties of anti-washout, high-temperature-resistant cementitious grouting materials 抗冲蚀、耐高温胶结灌浆材料的制备及性能研究

2区工程技术

Physics of Fluids Pub Date : 2025-12-01 DOI: 10.1063/5.0302039

Xiuhao Li, Rentai Liu, Xiao Zhang, Wenlong Xu, Bin Liu, Zhanchao Yin, Xinyi Zhao, Wenjie Wang

{"title":"Preparation and properties of anti-washout, high-temperature-resistant cementitious grouting materials","authors":"Xiuhao Li, Rentai Liu, Xiao Zhang, Wenlong Xu, Bin Liu, Zhanchao Yin, Xinyi Zhao, Wenjie Wang","doi":"10.1063/5.0302039","DOIUrl":"https://doi.org/10.1063/5.0302039","url":null,"abstract":"High-temperature water inrush was an inevitable challenge encountered during deep engineering construction, posing significant risks to both personnel and property. To improve the efficiency of high-temperature water inrush sealing, a novel anti-washout, high-temperature-resistant grouting material was developed using sodium silicate and three types of organic additives. This study employed the simplex-centroid design method to investigate the effects of polyacrylamide (PAM), hydroxyethyl methyl cellulose (HEMC), and carboxymethyl cellulose (CMC) on the washout resistance, viscosity, and early strength of the grout. The optimal mix proportion was determined using the efficiency coefficient method. Additionally, the mechanisms of the organic additives were explored through microscopic analysis. The results indicated that PAM enhanced the retention rate, viscosity, and early strength of the grout. HEMC significantly improved viscosity and strength but reduced the anti-washout properties. CMC increased the retention rate, but its inclusion resulted in a decrease in both strength and viscosity. The optimal mix proportion was found to be 1.5% PAM, 1% HEMC, and 1.5% CMC. Furthermore, the organic additives demonstrated a dual effect of flocculation and retardation. The active groups of the additives interacted with Ca2+, forming flocculation structures that improved washout resistance. Simultaneously, competition for Ca2+ with sodium silicate slowed the reaction rate, allowing the grout to remain in the fluid–solid phase for a longer period, which enhanced both its anti-washout properties and pumpability. Finally, the time-dependent viscosity of the new grout at varying temperatures was examined, and a rheological constitutive model was developed to describe the fluid–solid transition process.","PeriodicalId":20066,"journal":{"name":"Physics of Fluids","volume":"37 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147915274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluating the accuracy of one-dimensional glottal flow model in predicting voice production: comparison to experiments and three-dimensional flow simulations. 评估一维声门流动模型在预测声音产生中的准确性：与实验和三维流动模拟的比较。

IF 4.3 2区工程技术

Physics of Fluids Pub Date : 2025-11-01 Epub Date: 2025-11-10 DOI: 10.1063/5.0292598

Tsukasa Yoshinaga, Zhaoyan Zhang

{"title":"Evaluating the accuracy of one-dimensional glottal flow model in predicting voice production: comparison to experiments and three-dimensional flow simulations.","authors":"Tsukasa Yoshinaga, Zhaoyan Zhang","doi":"10.1063/5.0292598","DOIUrl":"10.1063/5.0292598","url":null,"abstract":"<p><p>The glottal flow is often simplified as one-dimensional (1D) in phonation models to reduce computational cost. Although previous studies showed that a 1D flow model can predict voice production by a three-dimensional (3D) flow combined with a simplified two-mass vocal fold model, its validity in voice production involving more realistic 3D vibrations remains unclear. The goal of this study is to investigate the accuracy of the 1D flow model in predicting vocal fold vibration and voice production in a vocal fold model exhibiting a more realistic 3D vibration pattern, by comparing its prediction to that from a mechanical experiment and a 3D Navier-Stokes compressible flow model. The results showed that the 1D flow model predicted overall vibratory pattern similar to that observed in experiment and simulations based on the 3D flow model. However, the 1D flow model predicted slightly larger displacements and greater glottal flow fluctuations than the 3D flow model. The 3D flow model revealed strong variations in surface pressure along the anterior-posterior direction, particularly during the closing phase, which was not captured by the 1D flow model. Despite these differences, the 1D flow model adequately reproduced major aerodynamic and vibratory features under typical normal phonatory conditions, supporting its use in phonation models for efficient voice simulations.</p>","PeriodicalId":20066,"journal":{"name":"Physics of Fluids","volume":"37 11","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12671010/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145669344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Atomization characteristics of gas–liquid internal mixing of non-Newtonian fluids 非牛顿流体气液内混合的雾化特性

2区工程技术

Physics of Fluids Pub Date : 2025-11-01 DOI: 10.1063/5.0302543

Bo-qi Jia, Yuting Chao, Jiawei Wang, Qingjun Jin, Huan Leng, Yuhang Su, Junwei Gong, Ziheng Yu, Yusong Yu, Yu Wu

{"title":"Atomization characteristics of gas–liquid internal mixing of non-Newtonian fluids","authors":"Bo-qi Jia, Yuting Chao, Jiawei Wang, Qingjun Jin, Huan Leng, Yuhang Su, Junwei Gong, Ziheng Yu, Yusong Yu, Yu Wu","doi":"10.1063/5.0302543","DOIUrl":"https://doi.org/10.1063/5.0302543","url":null,"abstract":"Non-Newtonian fluids play a significant role in aerospace propulsion, yet the atomization strongly depends on nozzle structure, influencing combustion efficiency. However, existing studies have offered limited comparisons of how nozzle structure affects the atomization behavior. This study provides a comprehensive structural comparison of non-Newtonian spray nozzles and identifies their distinct atomization characteristics, aiming to provide new insights for optimizing non-Newtonian atomization systems. Nine nozzle configurations were designed, including external mixing straight/helical groove and internal mixing straight/helical groove nozzles with different sleeve outlet diameters (0.3, 0.4, and 0.5 mm) and Y-jet nozzles. Three representative fluids (glycerol–water solution, xanthan gum, and polyethylene oxide solutions) were tested. The results show that internal mixing nozzles generally achieve superior atomization, while external mixing designs are limited by pressure constraints. The Y-jet nozzle is characterized by a bimodal droplet size distribution, containing both extremely small and extremely large droplets. Moreover, in internal mixing nozzles, helical groove nozzles widen the spray angle by nearly 50% and reduce the Sauter mean diameter of shear-thinning fluids by about 40% compared with straight groove designs. For Newtonian fluids, reducing the sleeve outlet diameter promotes jet instability, whereas viscoelastic fluids require larger outlets to mitigate clogging. Furthermore, viscoelasticity suppresses jet breakup, necessitating higher gas pressures to disrupt molecular chains.","PeriodicalId":20066,"journal":{"name":"Physics of Fluids","volume":"37 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147915428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Optimization and effectiveness of the extended amphoteric-Gemini surfactant combination flooding for low-permeability reservoirs 低渗透油藏扩展两性- gemini复合驱优化及效果研究

2区工程技术

Physics of Fluids Pub Date : 2025-10-01 DOI: 10.1063/5.0296932

Guoqing Zhang, Yancheng Zheng, Li Zeng, Wenwei Wu, Zhen Tao, Wei Jing, Бауыржан Сарсенбекулы, Hongbin Yang, Wanli Kang

{"title":"Optimization and effectiveness of the extended amphoteric-Gemini surfactant combination flooding for low-permeability reservoirs","authors":"Guoqing Zhang, Yancheng Zheng, Li Zeng, Wenwei Wu, Zhen Tao, Wei Jing, Бауыржан Сарсенбекулы, Hongbin Yang, Wanli Kang","doi":"10.1063/5.0296932","DOIUrl":"https://doi.org/10.1063/5.0296932","url":null,"abstract":"Addressing the issue of low oil recovery in low-permeability reservoirs, the prepared extended amphoteric surfactant (C12P3E3NS) was combined with Gemini surfactants (C14-3–14) to form an optimized formula. The surface tensions, examined by a surface tensiometer, were determined to obtain the mixtures with C12P3E3NS mole fractions of 40% (named C23) and 50% (named C11), exhibiting stronger synergistic effect. The interfacial tensions (IFTs) of two mixtures, determined by an interfacial tensiometer, can reach ultra-low level (10−3 mN·m−1) at 10 wt.% salinity. Meanwhile, the emulsification ability of C23 with smaller emulsion droplet size is better than that of C11 due to its larger Zeta potential value, measured by a Zeta potential instrument, and interfacial film's strength, obtained by an automated drop tensiometer. Additionally, the wettability of slice surface, obtained by a contact angle measuring instrument, can be altered by surfactant mixtures from oil-wet to water-wet due to the removal of oil and covering of surfactants, thus conducive to stripping the residual oil and transforming the capillary resistance to driving force. Due to the synergistic effect of ultra-low IFT, wettability alteration ability, and emulsification, the depressurization rate of C23, across the coreflooding experiment, is 10.3% and its corresponding oil recovery factor is 12.2%, which are larger than those of C11. These results show that the extended amphoteric-Gemini surfactant combination can provide an alternative approach in low-permeability reservoirs.","PeriodicalId":20066,"journal":{"name":"Physics of Fluids","volume":"37 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147890658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Influence of different viscoelastic surfactant fracturing fluid formulations on coal permeability at different temperatures and pressures 不同粘弹性表面活性剂压裂液配方对不同温度和压力下煤渗透率的影响

2区工程技术

Physics of Fluids Pub Date : 2025-10-01 DOI: 10.1063/5.0293065

Yu Wang, Mengmeng Yang, Xinghua Zhang, Fazhi Yan, Yabin Gao

{"title":"Influence of different viscoelastic surfactant fracturing fluid formulations on coal permeability at different temperatures and pressures","authors":"Yu Wang, Mengmeng Yang, Xinghua Zhang, Fazhi Yan, Yabin Gao","doi":"10.1063/5.0293065","DOIUrl":"https://doi.org/10.1063/5.0293065","url":null,"abstract":"This study systematically evaluates the adaptability of viscoelastic surfactant (VES) fracturing fluids under deep coalbed methane (CBM) reservoir conditions. The rheological properties of three VES fluids—single-chain cationic (B), Gemini cationic (C), and nano-SiO2-modified Gemini (D)—were investigated at 303.15, 323.15, and 343.15 K. Four formulations, including de-ionized water (A), were assessed for their impact on coal permeability under coupled temperature–pressure conditions. Coal samples were soaked for 12 h at each temperature and at pressures of 3, 5, and 7 MPa, followed by porosity, permeability, and x-ray diffraction (XRD) characterization. Results show that coal permeability is strongly influenced by temperature–pressure conditions and fracturing fluid formulation. Group D achieved the greatest permeability enhancement, with an increase in up to 199.18 ± 19.06% at 343.15 K and 7 MPa. Rheological analysis revealed that, unlike Groups B and C—where the consistency index decreased markedly with rising temperature—the nano-SiO2-modified Group D maintained stable consistency (10.00–13.87) and exhibited a higher elastic modulus (G′ = 16.83), indicating superior thermal stability. XRD analysis showed that the synergistic interaction between nanoparticles and micelles in Group D significantly disrupted the vertical stacking of aromatic layers within the coal matrix, resulting in the largest reduction in microcrystalline stacking height (Lc) by 23.69%. This promoted the expansion and interconnection of pores and fractures, enhancing coal permeability. The study establishes a multi-scale mechanistic relationship among fracturing fluid composition, microstructural transformation, and permeability evolution, providing theoretical support for optimizing fracturing strategies in deep CBM reservoirs.","PeriodicalId":20066,"journal":{"name":"Physics of Fluids","volume":"37 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147917743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1