Flow Measurement and Instrumentation最新文献_第5页

The Boussignac valve: Experimental and numerical study of the working principle and thermofluid behavior 布西纳克阀：工作原理和热流体特性的实验和数值研究

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-03-01 DOI: 10.1016/j.flowmeasinst.2025.102873

Andrés Meana-Fernández , Irene Solís-Gallego , Ana Fernández-Tena , Sandra Velarde-Suárez

{"title":"The Boussignac valve: Experimental and numerical study of the working principle and thermofluid behavior","authors":"Andrés Meana-Fernández , Irene Solís-Gallego , Ana Fernández-Tena , Sandra Velarde-Suárez","doi":"10.1016/j.flowmeasinst.2025.102873","DOIUrl":"10.1016/j.flowmeasinst.2025.102873","url":null,"abstract":"<div><div>Devices that generate Continuous Positive Airway Pressure (CPAP) allow to increase respiration pressure in patients and enable an easier oxygenation. Despite advances in device size and noise reduction, many of them are still found cumbersome by patients. The Boussignac valve is a device without moving parts and reduced noise, able to generate CPAP by the coalescence of four high-speed-air jets. When connected to a face mask and an oxygen source, it may help in non-invasive ventilation procedures without disturbing patients. Due to its working principle, the generated pressure becomes a function of the valve flowrate, so its characterization becomes of vital importance to ensure patients receive adequate treatment. In this work, experimental tests and numerical Computer Fluid Dynamics (CFD) simulations were combined and compared with the manufacturer curve. It was possible to identify the main mechanisms responsible for pressure generation and flow amplification. – jet coalescence and viscous shearing. In contrast to the initial assumption of turbulence generating a one-directional valve, bidirectional flow was observed in the simulations, allowing exhaled air to leave the valve in the opposite direction. Pressure generation was found at between 20 and 60 % of the valve length. In addition, compressible effects arise as the flow rate increased above 10 L/min, leading to supersonic conditions at more than 25 L/min and the corresponding local temperature drop at the jet passages. The numerical procedure used may serve as a guideline for developing new valve models, ensuring mesh-independent results.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"104 ","pages":"Article 102873"},"PeriodicalIF":2.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552645","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}

引用次数: 0

Numerical simulation and optimization of dynamic characteristics of a bi-directional relief valve for vehicle shock absorbers 汽车减振器双向溢流阀动态特性的数值模拟与优化

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-02-28 DOI: 10.1016/j.flowmeasinst.2025.102871

Qingchao Xia , Dapeng Zhou , Ganghui Ye , Liujie Wu , Guoyun Ye , Bo Jin

{"title":"Numerical simulation and optimization of dynamic characteristics of a bi-directional relief valve for vehicle shock absorbers","authors":"Qingchao Xia , Dapeng Zhou , Ganghui Ye , Liujie Wu , Guoyun Ye , Bo Jin","doi":"10.1016/j.flowmeasinst.2025.102871","DOIUrl":"10.1016/j.flowmeasinst.2025.102871","url":null,"abstract":"<div><div>This paper focuses on the study of a bi-directional relief valve for vehicle shock absorbers. The performance of the solenoid valve significantly influences the overall efficiency of the vehicle damping system. In order to optimize its dynamic performance and ensure a better driving experience, an accurate dynamic model was developed to study the characteristics by numerical simulation approach. The model was validated by experimental results. With the validated model, the dynamic response of valve system under different operating conditions were discussed and selected some key parameters that have a significant impact on the dynamic characteristics by the Sobol sensitivity analysis method. Then, based on genetic algorithm, these parameters were optimized and the final optimization values were determined. Finally, the optimization was validated by comparing the experimental results before and after optimization. Under recovery stroke conditions, the maximum adjustment pressure increases 36.6 % and response time decreases 45 % compared to pre-optimization. This study proposes a more accurate modelling method and effectively improves the performance of the valve, which provides a validated methodology for enhancing the dynamic characteristics of electro-hydraulic control components in automotive suspension systems.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"104 ","pages":"Article 102871"},"PeriodicalIF":2.3,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529528","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}

引用次数: 0

Multi-source natural gas calorific value prediction model based on T-pipe analysis and response surface methodology 基于t管分析和响应面法的多源天然气热值预测模型

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-02-28 DOI: 10.1016/j.flowmeasinst.2025.102868

Jun Zhou , Wenqi Fu , Guangchuan Liang , Zichen Li , Xuan Jiang , Daixin Zhang , Dongyang Xu

引用次数: 0

Reducing the water hammering, surges, and slamming caused by check valve closure in a wastewater pumping station by using a swing flex check valve 通过使用摆动式伸缩止回阀，减少污水泵站中由止回阀关闭引起的水锤击、浪涌和砰砰声

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-02-28 DOI: 10.1016/j.flowmeasinst.2025.102870

Mohamed Adel , Fatma A.-M. Kassem , Ismail Fathy

{"title":"Reducing the water hammering, surges, and slamming caused by check valve closure in a wastewater pumping station by using a swing flex check valve","authors":"Mohamed Adel , Fatma A.-M. Kassem , Ismail Fathy","doi":"10.1016/j.flowmeasinst.2025.102870","DOIUrl":"10.1016/j.flowmeasinst.2025.102870","url":null,"abstract":"<div><div>Water hammer is one of the most dangerous phenomena in liquid or liquid/gas systems, because it can cause failure of the system integrity. Sudden valve closure in pipeline systems can cause high pressure that may lead to serious damages. Using an optimal valve closing rule can play an important role in managing extreme pressure in sudden valve closure. Many studies for water hammer concentrated on the main pipeline and pump stopping and important details can be overlooked. Air reduces wave celerity but increasing of surging can occur with some pipework configurations, particularly if air can be trapped, Pump startup can then result in severe water hammer. Selection of a proper check valve for a pumping station is essential to avoid vibration, noise, slamming, and pressure surge problems for the pipeline and pumps. So, in this paper two different check valves were tested for a sewage pumping station: a swing check valve and a swing flex check valve. Pressure measurements were recorded for both cases after a pump trip and resulting check valve closure. Surge analysis using a commercial software (Bentley Water Hammer) was performed. The experimental data was compared for predictions from the model. There is a good agreement between the experimental and predicted data. The results showed that the maximum transient pressure due to the swing flex check valve closure was 33.3 % less than using traditional swing check valve. Accordingly, it is recommended to use this type of valves in sewage water plants because of their high performance during pressure surges. The swing flex chack valve also achieved less slamming during sudden stop pump, so, it can be classified as a non slam check valve.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"104 ","pages":"Article 102870"},"PeriodicalIF":2.3,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563523","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}

引用次数: 0

An integrated approach of throttling physical model and machine learning for gas-liquid two-phase flow rates measurement 气液两相流量测量的节流物理模型与机器学习集成方法

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-02-28 DOI: 10.1016/j.flowmeasinst.2025.102866

Fachun Liang , Manqing Jin , Hongzhi Cui , Yixuan Zhu , Jiaao Chen , Guoxiang Tang , Ruixiang Ding

{"title":"An integrated approach of throttling physical model and machine learning for gas-liquid two-phase flow rates measurement","authors":"Fachun Liang , Manqing Jin , Hongzhi Cui , Yixuan Zhu , Jiaao Chen , Guoxiang Tang , Ruixiang Ding","doi":"10.1016/j.flowmeasinst.2025.102866","DOIUrl":"10.1016/j.flowmeasinst.2025.102866","url":null,"abstract":"<div><div>In the field of flow measurement, machine learning methods have been widely applied, and the training data used is often related to physical principles. In this study, integrating the hydraulic and thermal characteristics resulting from two-phase flow throttling, the data-physics model-based flow measurement (DPMFM) without separation for gas-liquid two-phase flow by combining throttling physical model with machine learning technique is proposed. Throttling experiments are conducted with a 12 mm nozzle. The throttling physical model is obtained through theoretical derivation and experimental data fitting. It serves as a physical constraint in the prediction model of mas quality and the basis for the calculation of flow rates. Representative features are selected as network inputs based on correlation calculation results. The performance of the model is assessed with untreated datasets and compared with the model without a physical constraint. Measurements of gas and liquid flow rates are in a good agreement with the experiments with Mean Absolute Percentage Error (MAPE) of 3.82 % and 3.62 %. The precision is favorable, with relative uncertainties for gas and liquid flow rate at 0.39 % and 0.57 %, respectively.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"104 ","pages":"Article 102866"},"PeriodicalIF":2.3,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563524","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}

引用次数: 0

Development of a prototype for measuring the fuel consumption of ocean-going ships 研制测量远洋船舶燃油消耗量的样机

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-02-27 DOI: 10.1016/j.flowmeasinst.2025.102869

Oliver Büker , Krister Stolt , Corinna Kroner , Alexander Borchling , Manfred Werner , Günter Hagemann , Heiko Warnecke

{"title":"Development of a prototype for measuring the fuel consumption of ocean-going ships","authors":"Oliver Büker , Krister Stolt , Corinna Kroner , Alexander Borchling , Manfred Werner , Günter Hagemann , Heiko Warnecke","doi":"10.1016/j.flowmeasinst.2025.102869","DOIUrl":"10.1016/j.flowmeasinst.2025.102869","url":null,"abstract":"<div><div>The maritime sector is working hard to reduce greenhouse gas emissions. Overall, the shipping industry is under considerable pressure to identify innovative solutions, including a transition from conventional to cleaner fuels by 2050.</div><div>The most promising future fuels are ammonia, ethanol and methanol, which have lower viscosities than current fuels. These new generation fuels are sustainable and have the potential to significantly reduce greenhouse gas emissions.</div><div>Positive displacement meters are one of the most common types of flow meters used to measure fuel in the marine sector. However, they usually require a certain viscosity to perform properly. The aim of this study is to investigate the measurement performance of a prototype positive displacement fuel consumption meter capable of measuring next generation marine fuels and fuel blends with these and established fuels. The paper outlines the development of the prototype and how it was subsequently improved. Measurements were carried out on the prototype with fuels of different viscosities and line pressures relevant to shipping. The results prove that the meter operates almost independently of viscosity and pressure, making it suitable to accurately measure today's (current fuels), tomorrow's (blended fuels) and future fuels. Finally, suggestions for further improvements are given.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"104 ","pages":"Article 102869"},"PeriodicalIF":2.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Leakage fault diagnosis of oil and gas pipelines based on improved spiking residual network 基于改进尖峰残差网络的油气管道泄漏故障诊断

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-02-25 DOI: 10.1016/j.flowmeasinst.2025.102865

Dongmei Wang , Dan Zhang , Yang Wu , Dandi Yang , Peng Wang , Jingyi Lu

{"title":"Leakage fault diagnosis of oil and gas pipelines based on improved spiking residual network","authors":"Dongmei Wang , Dan Zhang , Yang Wu , Dandi Yang , Peng Wang , Jingyi Lu","doi":"10.1016/j.flowmeasinst.2025.102865","DOIUrl":"10.1016/j.flowmeasinst.2025.102865","url":null,"abstract":"<div><div>The safe operation of oil and gas pipelines is of vital importance for maintaining national energy security. Therefore, the implementation of efficient pipeline leakage detection is an important link to ensure the safe and stable operation of pipelines. In this paper, a pipeline leakage detection method based on an improved spiking residual network is proposed. First, a coding method is proposed to encode the original signal into a spiking sequence. The input oil and gas pipeline signals are encoded using short-time Fourier transform combined with spatial gating mechanism and LIF neurons. Second, wavelet convolution was introduced to improve the original spiking residual network. Finally, the improved spiking residual network is used to classify the pipeline signals after the coding process. The experimental results show that the classification accuracy of the model proposed in this paper reaches 100 % on the original signal data, and 95.62 % with the addition of 5 dB Gaussian white noise, which effectively shows that the method has high accuracy and strong robustness, and can effectively improve the oil and gas pipeline leakage detection effect.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"104 ","pages":"Article 102865"},"PeriodicalIF":2.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526693","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}

引用次数: 0

Coriolis massflow measurement errors due to inhomogeneous entrained particles: An analytical model 非均匀夹带粒子引起的科里奥利质量流测量误差：一个解析模型

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-02-23 DOI: 10.1016/j.flowmeasinst.2025.102847

Stephan Wernli , Lilach Goren Huber , Nicolas P. Avdelidis , Alfred Rieder

引用次数: 0

Research on steam flowrate measurement based on vortex uniform velocity tube integrated sensor 基于涡均速管集成传感器的蒸汽流量测量研究

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-02-21 DOI: 10.1016/j.flowmeasinst.2025.102854

Lide Fang , Xinyuan Zhang , Zeqi Wang , Danlei Zhao , Yue Feng

引用次数: 0

The flow field modeling and performance analysis method for the pilot stage of deflector jet servo valve 偏转板射流伺服阀先导级流场建模及性能分析方法

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-02-21 DOI: 10.1016/j.flowmeasinst.2025.102851

Xiaoxue Liu, Yaobao Yin, Yifan Wang, Weiqi Wang, Xinyi Wang, Hong Wang

{"title":"The flow field modeling and performance analysis method for the pilot stage of deflector jet servo valve","authors":"Xiaoxue Liu, Yaobao Yin, Yifan Wang, Weiqi Wang, Xinyi Wang, Hong Wang","doi":"10.1016/j.flowmeasinst.2025.102851","DOIUrl":"10.1016/j.flowmeasinst.2025.102851","url":null,"abstract":"<div><div>The deflector jet servo valve (DJSV) is a critical component in modern hydraulic control systems, widely used in aerospace, industrial automation, and precision machinery due to its high response speed and reliability. The pilot stage, as a core component of the servo valve, plays a crucial role in converting the displacement signal from the torque motor into the pressure signal to drive the movement of the power stage spool valve. However, the pilot stage flow field structure of the DJSV is intricate, involving multiple phases of energy conversion, and existing studies lack a complete mathematical model that can accurately describe its performance. This limitation has hindered the optimization of servo valve design and performance analysis. To address this gap, this paper proposes a novel method for modeling and performance analysis of the pilot stage flow field of the DJSV. Based on the working principles of the pilot stage and the mechanisms of energy transfer and conversion during the jet flow process, the pilot stage jet flow is divided into five distinct phases to develop a mathematical model of the flow field. Furthermore, the performance of the pilot stage and the influence of key structural parameters are analyzed, then a mapping relationship between them is established. This paper conducted a pressure characteristic test of the pilot stage to verify the correctness of the proposed method. The proposed model offers significant practical value for optimizing servo valve design, reducing development time, and improving system performance in various industrial applications.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"103 ","pages":"Article 102851"},"PeriodicalIF":2.3,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487288","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}

引用次数: 0