Flow Measurement and Instrumentation最新文献

英文中文

Numerical simulation and optimization of dynamic characteristics of a bi-directional relief valve for vehicle shock absorbers

IF 2.3 3区工程技术 Q2 ENGINEERING, MECHANICAL

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

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.

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引用次数: 0

Multi-source natural gas calorific value prediction model based on T-pipe analysis and response surface methodology

IF 2.3 3区工程技术 Q2 ENGINEERING, MECHANICAL

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

In the rapid development of the natural gas industry, it is important to achieve accurate and reliable prediction of natural gas calorific value (NGCV). With the formation of a multi-source gas supply, various parameters of natural gas flow will undergo changes, which can affect the acquisition of NGCV. Therefore, this paper establishes a T-pipe model of a multi-source mixed-transmission to analyze the influencing factors of NGCV. It explores the relationship between the mixing of natural gas from multiple sources, gas supply volume, pipe diameter, and other factors, and determine the position where the multi-source natural gas is uniformly mixed in the T-pipe. Additionally, a calorific value prediction model based on response surface (RSCVP-model) is proposed. The uncertainty of the model ranges from 0.18 % to 0.253 %, validating the accuracy and applicability of the model and providing reference for the prediction of NGCV.

在天然气工业快速发展的今天，准确可靠地预测天然气热值（NGCV）显得尤为重要。随着多气源气源的形成，天然气流的各种参数会发生变化，从而影响天然气热值的获取。因此，本文建立了一个多气源混输的 T 型管道模型，以分析 NGCV 的影响因素。它探讨了多气源天然气混合、供气量、管道直径等因素之间的关系，并确定了多气源天然气在 T 型管道中均匀混合的位置。此外，还提出了基于响应面的热值预测模型（RSCVP 模型）。模型的不确定性在 0.18 % 到 0.253 % 之间，验证了模型的准确性和适用性，为预测 NGCV 提供了参考。

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

IF 2.3 3区工程技术 Q2 ENGINEERING, MECHANICAL

Flow Measurement and Instrumentation

Pub Date : 2025-02-28 DOI: 10.1016/j.flowmeasinst.2025.102870

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

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.

{"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

IF 2.3 3区工程技术 Q2 ENGINEERING, MECHANICAL

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

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.

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引用次数: 0

Development of a prototype for measuring the fuel consumption of ocean-going ships

IF 2.3 3区工程技术 Q2 ENGINEERING, MECHANICAL

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

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.

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.

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.

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引用次数: 0

Leakage fault diagnosis of oil and gas pipelines based on improved spiking residual network

IF 2.3 3区工程技术 Q2 ENGINEERING, MECHANICAL

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

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.

油气管道的安全运行对于维护国家能源安全至关重要。因此，实施高效的管道泄漏检测是确保管道安全稳定运行的重要环节。本文提出了一种基于改进型尖峰残差网络的管道泄漏检测方法。首先，提出一种编码方法，将原始信号编码为尖峰序列。输入的油气管道信号通过短时傅立叶变换结合空间门控机制和 LIF 神经元进行编码。其次，引入小波卷积来改进原始的尖峰残差网络。最后，利用改进后的尖峰残差网络对编码后的管道信号进行分类。实验结果表明，本文提出的模型在原始信号数据上的分类准确率达到 100%，在加入 5 dB 高斯白噪声后的分类准确率达到 95.62%，有效说明了该方法具有较高的准确率和较强的鲁棒性，能有效提高油气管道泄漏检测效果。

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引用次数: 0

Coriolis massflow measurement errors due to inhomogeneous entrained particles: An analytical model

IF 2.3 3区工程技术 Q2 ENGINEERING, MECHANICAL

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

The Coriolis mass flow meter is a critical instrument used in various industries for the precise measurement of mass flow rate and density of a fluid. Despite its widespread use, the impact of entrained particles within the fluid can significantly affect the accuracy of the meter, leading to potential errors and inefficiencies. Previous calculations of the mass flow errors assumed that the entrained particles are uniformly distributed along the axis of the measurement tube. In this paper we extend the analytical investigation of the measurement errors beyond the previous work to the regime of non-uniform density distribution of the entrained particles. We provide a clear analysis of the contributions of various physical effects in this regime to the mass-flow measurement error.

引用次数: 0

Research on steam flowrate measurement based on vortex uniform velocity tube integrated sensor

IF 2.3 3区工程技术 Q2 ENGINEERING, MECHANICAL

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

Steam, as a recyclable energy source, has a wide range of applications. The accurate measurement of steam flowrate is closely related to the selection and installation of steam flowmeters. Combining the advantages of differential pressure (DP) measurement and vortex street measurement methods, a vortex uniform velocity tube integrated sensor is designed in this paper. Based on the condensation weighing standard device of the national steam metering station, experimental measurements and performance verification are conducted on the sensor using superheated steam as the medium. The results show that the vortex uniform velocity tube integrated sensor designed in this study has a relative error(RE) of less than 1 % in measuring steam mass flow rate and steam density, and a repeatability of less than 0.7 %. This sensor can achieve high-precision measurement of steam under high temperature and high pressure.

引用次数: 0

The flow field modeling and performance analysis method for the pilot stage of deflector jet servo valve

IF 2.3 3区工程技术 Q2 ENGINEERING, MECHANICAL

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

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.

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引用次数: 0

Recognition of analogous oil droplet attached to transparent pipe wall

IF 2.3 3区工程技术 Q2 ENGINEERING, MECHANICAL

Flow Measurement and Instrumentation

Pub Date : 2025-02-20 DOI: 10.1016/j.flowmeasinst.2025.102852

Han Lian-fu , Zhang Yin-hao , Wang Hai-xia , Gu Jian-fei , Liu Xingbin , Fu Chang-feng

PTV is an active study method of oil-water two-phase flow characteristic based on photogrammetry. It has advantages of undisturbed, no-contact and high measurement accuracy which directly related to the image quality. However, analogous oil droplet attachments on inner transparent pipe wall are often recorded as part of image, thus reducing measurement accuracy. To overcome the obstacle, it is necessary to identify and locate the outline of analogous oil droplet attachments. Extracting color and motion characters of oil-water two-phase flow images as features for clustering and applying K-means algorithm to identify and locate the outline of the analogous oil droplet attachment. K-means algorithm's clustering result is greatly affected by initial clustering centers and outlier data in practical applications, so Isolation Forest is adopted to improve K-means algorithm. The new algorithm proposed in this paper is called ILF-Kmeans. Simulation and experiment verification are carried out on ILF-Kmeans algorithm. Simulation results show that ILF-Kmeans algorithm has better clustering effect and higher identification accuracy than K-means algorithm; Experiment results show that measurement accuracy of PTV based on ILF-Kmeans to measure the oil phase velocity of oil-water two-phase flow increases by 4.25 %.

{"title":"Recognition of analogous oil droplet attached to transparent pipe wall","authors":"Han Lian-fu , Zhang Yin-hao , Wang Hai-xia , Gu Jian-fei , Liu Xingbin , Fu Chang-feng","doi":"10.1016/j.flowmeasinst.2025.102852","DOIUrl":"10.1016/j.flowmeasinst.2025.102852","url":null,"abstract":"<div><div>PTV is an active study method of oil-water two-phase flow characteristic based on photogrammetry. It has advantages of undisturbed, no-contact and high measurement accuracy which directly related to the image quality. However, analogous oil droplet attachments on inner transparent pipe wall are often recorded as part of image, thus reducing measurement accuracy. To overcome the obstacle, it is necessary to identify and locate the outline of analogous oil droplet attachments. Extracting color and motion characters of oil-water two-phase flow images as features for clustering and applying K-means algorithm to identify and locate the outline of the analogous oil droplet attachment. K-means algorithm's clustering result is greatly affected by initial clustering centers and outlier data in practical applications, so Isolation Forest is adopted to improve K-means algorithm. The new algorithm proposed in this paper is called ILF-Kmeans. Simulation and experiment verification are carried out on ILF-Kmeans algorithm. Simulation results show that ILF-Kmeans algorithm has better clustering effect and higher identification accuracy than K-means algorithm; Experiment results show that measurement accuracy of PTV based on ILF-Kmeans to measure the oil phase velocity of oil-water two-phase flow increases by 4.25 %.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"103 ","pages":"Article 102852"},"PeriodicalIF":2.3,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471745","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

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数据库

全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

期刊

Flow Measurement and Instrumentation

全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.

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