Flow Measurement and Instrumentation最新文献

Research on transient characteristics and cavitation phenomenon of faulty rotor pump

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-03-28 DOI: 10.1016/j.flowmeasinst.2025.102899

Jiadi Lian , Hubing Zhang , Yibin Li , Hangqing Xie , Jing Xu

{"title":"Research on transient characteristics and cavitation phenomenon of faulty rotor pump","authors":"Jiadi Lian , Hubing Zhang , Yibin Li , Hangqing Xie , Jing Xu","doi":"10.1016/j.flowmeasinst.2025.102899","DOIUrl":"10.1016/j.flowmeasinst.2025.102899","url":null,"abstract":"<div><div>In contemporary refrigeration systems, the refrigerant pump serves as a critical power transmission device. This study examines the exacerbation of cavitation in refrigerant-mediated rotor pumps under multifactorial failure coupling, analyzing its correlation with performance degradation and pulsation signals. Through experimental validation, we establish a computational model that evaluates how rotational speed, pressure differential, fatigue pitting severity, crack depth, and gap dimensions collectively influence cavitation dynamics.The results demonstrate that cavitation intensity escalates nonlinearly with increasing rotational speed. Specifically, vapor fraction increases by 65.07 %, 65.24 %, and 57.76 % for pitted, cracked, and clearance-defective rotors respectively when the speed is elevated from 1305 to 1450 rpm. While higher pressure differentials lead to an overall reduction in cavitation (from 15.22 % to 14.74 % vapor fraction), localized cavitation intensifies at the inlet end-face meshing zones.Progressive failure severity reveals distinct nonlinear responses: an increase in pitting depth from 0.1 mm to 0.4 mm and crack propagation from 0.25 mm to 1 mm results in local vapor fractions rising by 3.26 % and 3.80 %, respectively; conversely, gap expansion from 0.1 mm to 0.25 mm induces a reduction of approximately 3.59 %. The established methodology provides an effective framework for diagnosing cavitation-coupled failures in rotary hydraulic systems.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"104 ","pages":"Article 102899"},"PeriodicalIF":2.3,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739910","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

The effect of channel slope on steep channel flow instability

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-03-26 DOI: 10.1016/j.flowmeasinst.2025.102900

Hsun-Chuan Chan, Yu-Zhou Lin, Po-Wei Lin

引用次数: 0

Real-time reconstruction of a slug regime with a collimated infrared transceiver

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-03-25 DOI: 10.1016/j.flowmeasinst.2025.102898

K. Sowndarya, M. Venkatesan

引用次数: 0

Flow measurement of pipeline fluids based on wavenumber-frequency spectrum

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-03-24 DOI: 10.1016/j.flowmeasinst.2025.102897

Rui Pei , Danping Jia , Zhensheng Zang , Bing Chang , Bo Liu , Yong Sun , Meng Dong

{"title":"Flow measurement of pipeline fluids based on wavenumber-frequency spectrum","authors":"Rui Pei , Danping Jia , Zhensheng Zang , Bing Chang , Bo Liu , Yong Sun , Meng Dong","doi":"10.1016/j.flowmeasinst.2025.102897","DOIUrl":"10.1016/j.flowmeasinst.2025.102897","url":null,"abstract":"<div><div>Flow is a crucial parameter in industrial production, but traditional flowmeters often face limitations due to the field measurement conditions. This paper explores the array signal processing technology used in passive sonar and details how to measure the flow rate in a pipeline through wavenumber-frequency (<span><math><mrow><mi>k</mi><mo>−</mo><mi>ω</mi></mrow></math></span>) spectrum analysis. Firstly, based on the “Taylor frozen” concept of turbulence, the feasibility of using convective velocity to measure the flow rate in a pipeline is studied, and the composition of the disturbance signal is modeled theoretically. Secondly, the signal amplitude and frequency characteristics of water and air are analyzed as the flow rate changes. The Minimum Variance Distortionless Response (MVDR) beamforming algorithm is utilized to address the “convective ridge,” and the slant stack (<span><math><mrow><mi>τ</mi><mo>−</mo><mi>v</mi></mrow></math></span>) algorithm helps identify the accurate velocity corresponding to the slope of ridge. Finally, Field experiments were performed using DN50 and DN80 pipelines equipped with piezoelectric sensors. The results showed that the relative errors of water flow and air flow were both less than ±1.0 %, which proved the effectiveness of wavenumber-frequency spectrum method for measuring flow. Therefore, it is of great engineering guiding significance to utilize passive sonar technique to measure pipeline flow.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"104 ","pages":"Article 102897"},"PeriodicalIF":2.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704967","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

Eroded orifice flow characteristics and bionic anti-erosion of a hydraulic servo spool valve

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-03-24 DOI: 10.1016/j.flowmeasinst.2025.102896

Liu Xin-qiang , Chai Cheng-tian , Ji Hong , Wang Cong , Liu Fei , Xiao Yao

{"title":"Eroded orifice flow characteristics and bionic anti-erosion of a hydraulic servo spool valve","authors":"Liu Xin-qiang , Chai Cheng-tian , Ji Hong , Wang Cong , Liu Fei , Xiao Yao","doi":"10.1016/j.flowmeasinst.2025.102896","DOIUrl":"10.1016/j.flowmeasinst.2025.102896","url":null,"abstract":"<div><div>Solid particle contaminants in hydraulic oil can erode the orifices of servo spool valves, degrading their microstructure and altering their flow characteristics. To investigate this phenomenon, a computational fluid dynamics surface model was developed to simulate the effects of erosion, and its accuracy was validated through static characteristic tests. This study analyzed the flow behavior of eroded orifices and introduced a bionic anti-erosion design inspired by the structure of a desert scorpion's back. Results showed that erosion increased oil flow velocity and the incidence angle at small openings, causing the primary flow to shift away from the spool edge. In addition, the direction angle of the pressure gradient increased, resulting in the formation of a low-pressure region within the valve sleeve and complicating particle trajectories, particularly near the P→A orifice. The bionic convex structure promoted mainstream offset and micro-vortex effects, which effectively reduced erosion. Notably, under optimal parameters (R = 30, C = 5), the average erosion rates of the spool and sleeve were reduced by 43 % and 21 %, respectively. This study offers a novel approach for enhancing the durability of hydraulic valves.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"104 ","pages":"Article 102896"},"PeriodicalIF":2.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704968","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

A novel loading-sensing flow division principle against large load deviation and flow variation for high presicion hydraulic synchronous drive

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-03-21 DOI: 10.1016/j.flowmeasinst.2025.102891

Haigang Ding , Chengcheng Yang , Jingyi Su , Shiqi Chen , Qiang Zuo

{"title":"A novel loading-sensing flow division principle against large load deviation and flow variation for high presicion hydraulic synchronous drive","authors":"Haigang Ding , Chengcheng Yang , Jingyi Su , Shiqi Chen , Qiang Zuo","doi":"10.1016/j.flowmeasinst.2025.102891","DOIUrl":"10.1016/j.flowmeasinst.2025.102891","url":null,"abstract":"<div><div>Load deviation and flow variation are the two main factors affecting accuracy of hydraulic synchronous drive using flow dividers. This paper proposes a novel loading-sensing flow division principle, which could resist large load deviations and flow changes. Based on the principle, a load-sensing flow dividing valve (LFDV) is developed, combing with multiple functions of load sensing, flow distribution and speed regulation, which establishes a dynamic link between the pump source and the loads by load sensing. This paper describes the new flow division principle, designs the LFDV strcture, establishes a simulation model, and develops a LFDV prototype, and finally test its diverter characteristics under the conditions of time-varying loads and flow variations. The test results indicate that the proposed flow divider is almost not affected by load deviations and suitable for wide flow ranges, and its division accuracy is about 0.2 %–0.5 %, which is more than 10 times that of traditional flow dividers. This study provides a new principle and solution for hydraulic synchronous drives with high precision, high reliability and low cost.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"104 ","pages":"Article 102891"},"PeriodicalIF":2.3,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686203","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

A hybrid cellular automata-based topology optimization method for incompressible fluid flow channels

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-03-21 DOI: 10.1016/j.flowmeasinst.2025.102867

Wang Guan , Guangfei Xu , Linyuan Kou , Wang Li , Hongping Liu , Le Xu , Xu Wang

引用次数: 0

Transition of super-to subcritical flow without a hydraulic jump by a cross-sectional transition structure

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-03-21 DOI: 10.1016/j.flowmeasinst.2025.102889

Marzieh Rezashahreza, Abdorreza Kabiri-Samani, Mostafa Fazeli

{"title":"Transition of super-to subcritical flow without a hydraulic jump by a cross-sectional transition structure","authors":"Marzieh Rezashahreza, Abdorreza Kabiri-Samani, Mostafa Fazeli","doi":"10.1016/j.flowmeasinst.2025.102889","DOIUrl":"10.1016/j.flowmeasinst.2025.102889","url":null,"abstract":"<div><div>Shock waves complicate the design of hydraulic structures, involving the transitions in a channel with supercritical flow regime. Abrupt changes in characteristics of a supercritical flow, e.g., in convergent transitions, would result in a rapidly varied flow associated with a hydraulic jump, causing waves and surface fluctuations. Therefore, by applying an appropriate transition structure inside the channel, the hydraulic jump can be eliminated, and these disruptions are minimized. In the present study, an analytical/experimental investigation is conducted to design a cross-sectional transition structure CSTS, eliminating the hydraulic jump with supercritical inflow Froude numbers between 2.5 and 5.5. An analytical study was performed to design the transition structures based on the fluid shock waves theory, resulting in a conceptual design diagram for excluding the hydraulic jump from super-to subcritical flow regime. According to the results, the present CSTSs are more efficient than the corresponding bed transition structures BTSs, indicating great potential of the CSTSs to change the flow regime from super-to subcritical flow without a hydraulic jump. Flow inside the CSTSs was analyzed and the analytical results were verified, applying the present experimental measurements. Based on experimental observations, weak vortices are generated downstream of the critical section, disappearing after a fall in the water free-surface profile across the critical section.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"104 ","pages":"Article 102889"},"PeriodicalIF":2.3,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686170","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 instance mask representation for bubble size distribution in two-phase bubble flotation column based on deep learning model

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-03-19 DOI: 10.1016/j.flowmeasinst.2025.102892

Zhiping Wen , Maiqiang Zhou , Sanja Mišković , Changchun Zhou

引用次数: 0

Yttria-stabilized zirconia flow sensor for high-temperature and humidity with compensation algorithm

IF 2.3 3区工程技术

Flow Measurement and Instrumentation Pub Date : 2025-03-19 DOI: 10.1016/j.flowmeasinst.2025.102894

Huiying Sun , Yongping Zhang , Yang Wang , Wentian Wang , Lei Zhao , Xinxin Yan , Jie Shen , Junliang Li , Jie Zou , Jiawen Jian

{"title":"Yttria-stabilized zirconia flow sensor for high-temperature and humidity with compensation algorithm","authors":"Huiying Sun , Yongping Zhang , Yang Wang , Wentian Wang , Lei Zhao , Xinxin Yan , Jie Shen , Junliang Li , Jie Zou , Jiawen Jian","doi":"10.1016/j.flowmeasinst.2025.102894","DOIUrl":"10.1016/j.flowmeasinst.2025.102894","url":null,"abstract":"<div><div>Flow sensors are widely used in industrial production, but their measurement accuracy remains insufficient in high-temperature and high-humidity environments. To address this issue, this study developed a novel flow sensor based on yttria-stabilized zirconia (YSZ) solid-state electrolytes. It integrates both flow velocity and humidity measurement capabilities. This research systematically investigated the effects of environmental temperature and humidity on the sensor's output signals and proposed a compensation algorithm to mitigate temperature and humidity interference, thereby enhancing measurement accuracy. Experimental results showed that the sensor output signal decreases with increasing inlet temperature and increases with rising inlet humidity. Through linear fitting, the relationship between flow velocity output signal drift and environmental temperature and humidity was established. This relationship was then utilized for compensation, resulting in a significant improvement in measurement accuracy. The experiments demonstrated that the sensor exhibits high accuracy and stability in high-temperature and high-humidity environments, effectively optimizing flow velocity detection performance.</div></div>","PeriodicalId":50440,"journal":{"name":"Flow Measurement and Instrumentation","volume":"104 ","pages":"Article 102894"},"PeriodicalIF":2.3,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143726018","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