Flow Measurement and Instrumentation最新文献

{"title":"High-resolution electrical capacitance tomography image reconstruction in oil and gas production processes based on adaptive KAN mechanism","authors":"Chunman Yan,&nbsp;Kai Li","doi":"10.1016/j.flowmeasinst.2025.102948","DOIUrl":"10.1016/j.flowmeasinst.2025.102948","url":null,"abstract":"<div><div>In the oil and gas production process, accurate monitoring of the two-phase flow distribution of petroleum and air within pipelines is crucial for improving transportation efficiency and optimizing production. Electrical Capacitance Tomography (ECT) has emerged as one of the most promising technologies in multiphase flow measurement due to its low cost and non-invasive nature. However, the inherent nonlinear characteristics between capacitance and permittivity, caused by uneven sensitivity distribution in ECT sensitivity fields, remain a key challenge for improving imaging quality. This paper proposes a high-resolution ECT imaging model based on an adaptive KAN mechanism (ECT-KHR). The model employs a two-stage network approach to address the non-linear mapping between capacitance and permittivity, thereby enhancing imaging resolution. Specifically, the first-stage network introduces KANs for adaptive fitting of the non-linear mapping. The second-stage network combines deep residual networks and sub-pixel convolution to repair and reconstruct low-resolution images from the first stage, thus reducing imaging artifacts and improving accuracy. Experimental results indicate that the ECT-KHR model achieves an average correlation coefficient exceeding 0.991, an average relative image error of approximately 0.098, and an average peak signal-to-noise ratio (PSNR) of 36.52. Notably, the model approaches direct algorithms in computation time, indicating superior accuracy and adaptability for multiphase flow monitoring under various flow regimes in oil and gas production processes.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"106 ","pages":"Article 102948"},"PeriodicalIF":2.3,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CFD analysis of geometry configuration and sensor placement for hybrid triangular-T bluff body in vortex flowmeter","authors":"Payam Margan ,&nbsp;Seyed Hassan Hashemabadi","doi":"10.1016/j.flowmeasinst.2025.102950","DOIUrl":"10.1016/j.flowmeasinst.2025.102950","url":null,"abstract":"<div><div>Vortex flowmeters are extensively employed in industrial settings for precise fluid flow measurement. This study aims to enhance vortex generation and pressure oscillation by extending tails in various lengths downstream of a triangular bluff body. Computational Fluid Dynamics (CFD) simulations were performed employing the Realizable k-ε turbulence model to study the geometry of the T-shaped bluff body and sensor placement for accurate flow measurement. A tail-to-width ratio (T/W) of 0.7 was identified as the most effective configuration for strong pressure fluctuations. Analysis of sensor placement indicated that the highest intensity of dynamic pressure oscillations was found at a distance of 7.9 times the width of the bluff body (X/W = 7.9) from the inlet. Additionally, variations in velocity, dynamic and static pressure, and turbulent kinetic energy production and dissipation were investigated along the flowmeter's axis to confirm the ideal sensor location. Results demonstrated signal clarity and sensitivity of the flowmeter for the proposed geometry configuration and sensor placement, indicating the potential for improved measurement consistency. Rangeability assessment revealed a stable Strouhal number (0.26–0.27) over a broad range of Reynolds numbers, ensuring reliable performance across diverse flow rates compared to conventional flowmeters.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"106 ","pages":"Article 102950"},"PeriodicalIF":2.3,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144298338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental study on flow characteristics and flow prediction of CO2 through a combinational flow regulator","authors":"Bin Qin ,&nbsp;Jingwen Lin ,&nbsp;Jiaxu Hao ,&nbsp;Quan Zhang","doi":"10.1016/j.flowmeasinst.2025.102961","DOIUrl":"10.1016/j.flowmeasinst.2025.102961","url":null,"abstract":"<div><div>Flow regulators are extensively utilized in the flow control of pipeline systems, as the internal flow characteristics significantly affect the system's operational conditions. This study proposes a combinational flow regulator featuring four branch channels and orifice plates, aiming to improve CO₂ flow control and regulation precision. Initially, the variations in pressure, temperature, and flow rate during the passage of CO₂ through the combinational flow regulator are analyzed. Subsequently, the influence of pressure difference and the number of orifices on the flow rate is examined. Furthermore, an analysis of the effect of the orifice throttling area on pressure distribution leads to the establishment of a fitting equation. This equation correlates the pressure difference with parameters like the upstream pressure and the orifice throttling area. Finally, the original experimental data undergoes statistical analysis to develop a new correlation, which is employed to predict the flow rate under varying initial conditions. This research has significant implications for the regulation of CO₂ flow rates in flow regulators, which contributes to the enhancement of system stability and efficiency.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"106 ","pages":"Article 102961"},"PeriodicalIF":2.3,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimized design and test based on Fluent cyclone dust removal device","authors":"Haiyang Xu,&nbsp;Mingyu Luo,&nbsp;Yuyang Chen,&nbsp;Xiao Fu,&nbsp;Yilong Dong,&nbsp;Dejun Liu","doi":"10.1016/j.flowmeasinst.2025.102953","DOIUrl":"10.1016/j.flowmeasinst.2025.102953","url":null,"abstract":"<div><div>This study aimed to optimize the design of a cyclone dust removal device for a waste textile opening machine to improve the dust removal efficiency. Theoretical analysis and structural parameter design were conducted, followed by computational particle fluid mechanics simulations to investigate the gas-solid two-phase flow characteristics inside the device. The effects of the inlet aspect ratio, exhaust pipe diameter, and exhaust pipe insertion depth on the separation efficiency and pressure drop were analyzed using the Design-Expert software. The optimal combination of structural parameters was an inlet aspect ratio of 2:1, exhaust pipe diameter of 140 mm, and exhaust pipe insertion depth of 155 mm. An optimized cyclone dust removal device was fabricated and tested, demonstrating a dust removal efficiency of 87 %, which met the expected level and emission standards. The results of this study provide a valuable reference for the design of dust-removal devices for related machinery.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"106 ","pages":"Article 102953"},"PeriodicalIF":2.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel underwater multi-dimensional tactile and flow velocity perception method based on micro thermoelectric generator","authors":"Yuncong Wang,&nbsp;Changxin Liu,&nbsp;Zhenyao Ma,&nbsp;Tong Shao,&nbsp;Kailin Lei,&nbsp;Peihan Huang,&nbsp;Xing Feng","doi":"10.1016/j.flowmeasinst.2025.102955","DOIUrl":"10.1016/j.flowmeasinst.2025.102955","url":null,"abstract":"<div><div>With the continuous advancement in ocean resource development and deep-sea exploration, the demands for underwater robots' environmental adaptability, reaction speed, and operational precision are increasingly growing. A novel underwater multi-dimensional tactile perception method based on the micro thermoelectric generator (MTEG) is proposed in this study, which is enabled to perceive underwater characteristic materials, water flow velocity, and water flow direction. By monitoring the voltage output changes resulting from temperature changes on the cold side of the MTEG module after heat exchange, this method utilizes the Seebeck effect to convert thermal energy into electrical energy, thereby achieving perception of the underwater environment. A theoretical model for underwater multi-dimensional tactile perception based on MTEG is established in this study, and theoretical models for underwater characteristic material perception, water flow velocity perception, and water flow direction perception are derived. The experimental results indicate that the perception unit can effectively identify characteristic materials with different thermal conductivity coefficients within 2 s and recognize water flow velocity changes within the range of −8 to 8 m/s, with a recognition accuracy of 0.5 m/s. Moreover, the water flow direction perception unit is capable of recognizing the direction of water flow under rapidly changing conditions and maintains a rapid response even in high-flow environments. The underwater multi-dimensional tactile perception method proposed in this study provides technical support for exploration and development operations of marine resources in complex marine environments.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"106 ","pages":"Article 102955"},"PeriodicalIF":2.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144190529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-objective optimization of DBD plasma actuator characteristics for turbulent flow separation control over airfoils","authors":"A. Rahni,&nbsp;A. Jahangirian","doi":"10.1016/j.flowmeasinst.2025.102951","DOIUrl":"10.1016/j.flowmeasinst.2025.102951","url":null,"abstract":"<div><div>The optimal characteristics of a plasma actuator for effective control of high Reynolds number turbulent flow separation around airfoils are investigated. The actuator position on the airfoil and its voltage are chosen as variable parameters. A multi-objective optimization using a Genetic Algorithm is used with two objective functions of maximizing aerodynamic efficiency and minimizing power consumption. The numerical simulation of the plasma actuator effect on the flow is carried out using Maxwell equations for the electro-hydrodynamic (EHD) field coupled with Reynolds Averaged Navier-Stokes equations through the Suzen model. An algorithm is developed to automatically adjust the actuator position, generate the mesh, and analyze the flow for a Reynolds number of one million. A detailed analysis of the results revealed that the actuator position significantly impacts aerodynamic efficiency, depending on the airfoil type and voltage applied to the actuator. Further study is carried out to investigate the separation control by plasma actuator over two airfoils with similar thicknesses, i.e., NACA0012 and NACA4412. Results indicated that the optimal actuator position for the symmetric airfoil is the leading edge, while that of the cambered airfoil (NACA4412) is near the middle of the airfoil. Furthermore, increasing the voltage beyond a specific threshold results in a rise in the drag coefficient, thereby diminishing the aerodynamic efficiency. The optimization analysis ultimately demonstrated that the peak aerodynamic efficiency for NACA0012 and NACA4412 airfoils is achieved at distinct voltage levels, specifically 18 kV and 21–22 kV, respectively.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"105 ","pages":"Article 102951"},"PeriodicalIF":2.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of flow field simulation and pulsation performance of non-circular gear hydraulic motor","authors":"Yongping Liu ,&nbsp;Linyue Wu ,&nbsp;Fuqiang Wang ,&nbsp;Changbin Dong","doi":"10.1016/j.flowmeasinst.2025.102954","DOIUrl":"10.1016/j.flowmeasinst.2025.102954","url":null,"abstract":"<div><div>The non-circular gear hydraulic motor is widely used in hydraulic transmission systems for mining and underground machinery, owing to its low velocity, high output torque, and compact structure. This paper focuses on the 4–6 type non-circular gear hydraulic motor as the research object. The influence of the coupling between the motor's internal flow field and the operation of the gear train on the motor's power pulsation performance is analysed using the mesh and particle-based methods. A three-dimensional fluid model of the motor is developed to systematically investigate the effects of pressure and flow velocity on the motor's stability. With regard to the pulsation rate of the motor, this study analyses the comparative relationship between the theoretical torque pulsation rate and the theoretical flow pulsation rate, while simultaneously considering the variation of the flow pulsation rate under the influence of oil entrapment in the gear teeth. The results show that the theoretical flow pulsation rate of the motor is basically consistent with the theoretical torque pulsation rate. However, when considering the oil entrapment in the motor gear teeth, the flow pulsation rate increases. In the flow field simulation, the flow velocity distribution in the flow field is found to be uneven. Specifically, high-velocity flow is formed in the air gap area, while in the area close to the sun gear and the inner gear ring, the flow is poor and stagnation phenomena occur, which aggravates the oil entrapment phenomenon. The findings of this study provide a theoretical basis for optimizing the performance of non-circular gear hydraulic motors and offer new insights into the simulation analysis of complex moving flow field, as well as the relationship between flow pulsation rate and oil entrapment characteristics.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"105 ","pages":"Article 102954"},"PeriodicalIF":2.3,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel super-twisting sliding mode control structure incorporating fuzzy logic for fuel regulator applications","authors":"Jun-Zheng Qi ,&nbsp;Wei-Wei Liu ,&nbsp;Yang Wang ,&nbsp;Hai-Xing Zhang ,&nbsp;Jian-Rong Song ,&nbsp;Huan-Qiang Liu ,&nbsp;Zai-Lin Guo","doi":"10.1016/j.flowmeasinst.2025.102947","DOIUrl":"10.1016/j.flowmeasinst.2025.102947","url":null,"abstract":"<div><div>To address the pronounced fuel supply fluctuations in afterburner fuel regulators, this study proposes a precision control strategy targeting the core metering valve. By integrating the servo valve and metering valve into a valve-controlled hydraulic cylinder system, a transfer function model is established to characterize the system dynamics. A hybrid control framework is developed, combining a super-twisting sliding mode controller (STC) with adaptive fuzzy logic to dynamically adjust sliding mode switching terms. This approach enables disturbance-adaptive regulation of the valve spool position, ensuring rapid tracking of reference signals while significantly reducing displacement errors. The integration of fuzzy logic with an optimized exponential term in the sliding variable further suppresses chattering phenomena, enhancing robustness without compromising tracking agility. These advancements provide a viable solution for high-precision fuel metering in military aeroengines, particularly in scenarios demanding stringent thrust stability and rapid dynamic response.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"105 ","pages":"Article 102947"},"PeriodicalIF":2.3,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144146979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of ResNet and Autoencoder models for anomaly detection in wastewater networks data: A Comparative study of supervised and unsupervised approaches","authors":"I. Zidaoui ,&nbsp;C. Wemmert ,&nbsp;C. Joannis ,&nbsp;S. Isel ,&nbsp;J. Wertel ,&nbsp;J. Vazquez","doi":"10.1016/j.flowmeasinst.2025.102946","DOIUrl":"10.1016/j.flowmeasinst.2025.102946","url":null,"abstract":"<div><div>Artificial intelligence (AI) enhances data validation for urban wastewater networks by addressing inaccuracies in sensor-generated data from harsh environments. Traditional manual validation methods are labor-intensive and prone to human error, necessitating automated solutions. The performance of two AI-driven models— a supervised ResNet model and an unsupervised Autoencoder—was compared on turbidity data issued from an urban wastewater network. The ResNet model showed improved accuracy when the classification threshold was optimized using the Precison-Recall curve but required rigorous data validation to manage learning bias and class imbalance. The Autoencoder achieved an F1 score of 0.96, demonstrating its efficacy in detecting anomalies when trained on valid data sequences. Hence, AI models significantly reduce the workload of manual data validation, enhance the reliability of water management systems, and allow stakeholders to focus on more critical tasks.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"105 ","pages":"Article 102946"},"PeriodicalIF":2.3,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical analysis of fluid dynamics in a novel 30 MPa back pressure valve with dual throttling channels and a spherical valve core","authors":"Hao Song ,&nbsp;Jiayi Huang ,&nbsp;Yiwei Gao ,&nbsp;Yangyang Bao ,&nbsp;Shuyu Zhang ,&nbsp;Xin Zhang ,&nbsp;Xuejie Bai ,&nbsp;Juan Ma ,&nbsp;Debiao Li ,&nbsp;Liping Wei","doi":"10.1016/j.flowmeasinst.2025.102944","DOIUrl":"10.1016/j.flowmeasinst.2025.102944","url":null,"abstract":"<div><div>The rapid development of carbon neutrality and renewable energy technologies has imposed higher demands on high-pressure fluid control systems, while simultaneously creating diversified application scenarios for high-performance back pressure valves. Typical applications include pressure-resistant pipeline systems for green hydrogen storage and transportation, as well as for handling supercritical carbon dioxide under extreme pressures. This study proposes a novel back pressure valve featuring a ruby-made spherical core with dual-throttle channels, which addresses the limitations of conventional back pressure valves employing conical, cylindrical, or spring-diaphragm valve cores/pressure-regulating mechanisms. The innovative design effectively addresses the incompatibility, long-term leakage risks, and mechanical interference often encountered by traditional backpressure valves in high-pressure environments. The relationship between inlet pressure, maximum flow velocity, and maximum turbulent kinetic energy with valve opening were revealed based on experimentally validated numerical model. The results indicate that with a valve opening of 0.39 mm, the back pressure can reach up to 30 MPa, demonstrating excellent applicability across an inlet pressure range of 2–30 MPa. Additionally, when the valve opening is less than 6 mm, pressure suppression occurs within the valve chamber. Fluid-structure interaction analysis reveals that the maximum stress, the valve seat edge under peak pressure concentrated, reaches 192.54 MPa, leading to a deformation of 4.85 <span><math><mrow><mo>×</mo><msup><mn>10</mn><mrow><mo>−</mo><mn>3</mn></mrow></msup></mrow></math></span> mm. Finally, a comparison of valve cores made from ruby, 316-grade stainless steel, zirconium oxide, and silicon nitride ceramics shows that all materials meet the back pressure regulation requirements, with ruby offering the best economic efficiency.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"106 ","pages":"Article 102944"},"PeriodicalIF":2.3,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144329528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}