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Data-Adaptive Coherent Demodulator for High Dynamics Pulse-Wave Ultrasound Applications
2018
Electronics
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The proposed demodulator is integrated into a system for the detection of the velocity profile of fluids flowing in pipes. ...
Pulse-Wave Doppler (PWD) ultrasound has been applied to the detection of blood flow for a long time; recently the same method was also proven effective in the monitoring of industrial fluids and suspensions ...
Acknowledgments: Authors thank Johan Wiklund for his advice about fluid rheology.
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/electronics7120434
fatcat:ygo2bf3yoresfnpb66kreq74se
Flow Velocity Measurement Using a Spatial Averaging Method with Two-Dimensional Flexural Ultrasonic Array Technology
2019
Sensors
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Accurate average flow velocity determination is essential for flow measurement in many industries, including automotive, chemical, and oil and gas. ...
This research will drive new developments in ultrasonic flow measurement in a wide range of industrial applications. ...
Acknowledgments: The authors thank Jonathan Harrington of the University of Warwick for valuable technical assistance.
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/s19214786
pmid:31689886
pmcid:PMC6864707
fatcat:woch235i6jfh3pmplce2utb5ui
Open-Source FPGA Coprocessor for the Doppler Emulation of Moving Fluids
2021
Micromachines
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Experiments showed its capability to emulate a fluid flowing in a pipe when investigated by an echographic Doppler system. ...
The system can replace the complex and inaccurate flow-rigs employed in laboratorial tests of Doppler ultrasound systems and methods. ...
Acknowledgments: Author would like to thank Alessio Ortuño for his help in the FPGA implementation of the code and in the experiments. ...
doi:10.3390/mi12121549
pmid:34945399
pmcid:PMC8705441
fatcat:vnxxl7n7rben7k5ixdkrsorcja
FPGA-Based Doppler Frequency Estimator for Real-Time Velocimetry
2020
Electronics
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In range-Doppler ultrasound applications, the velocity of a target can be measured by transmitting a mechanical wave, and by evaluating the Doppler shift present on the received echo. ...
In several real-time applications, hundreds of thousands of velocity estimates must be produced per second, and not all of the proposed estimators are capable of performing at these high rates. ...
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/electronics9030456
fatcat:aipixcx4mja7fd4sudfj5fmrai
Coriolis flowmeters: a review of developments over the past 20 years, and an assessment of the state of the art and likely future directions
2014
Flow Measurement and Instrumentation
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The paper, then, focuses on providing an updated review of Coriolis flow measurement technology over the past 20 years. ...
This paper starts from a brief revisit of key early published work so that an overview of modern Coriolis flowmeters can be provided based on a historical background. ...
Acknowledgement The authors would like to thank the management of KROHNE for encouraging and supporting such a fundamental and thorough literature study on Coriolis flow measurement. ...
doi:10.1016/j.flowmeasinst.2014.08.015
fatcat:qvycdjlydncefo4nrmcrniyqxu
An Improved Normalized Model of Electrical Capacitance Tomography
2018
MATEC Web of Conferences
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The measured capacitances by ECT system are usually normalized at the high and low permittivity for image. ...
In this paper, we propose a method based on the center electric field line to determine the model weighting factor for the hybrid normalization model. ...
Zhou Lei for his helpful suggestions on the use of ECT DAS during the static experiments. ...
doi:10.1051/matecconf/201817601032
fatcat:mxim6odrcfcddoymjskdmflyki
An On-line Automatic Flow Measurement Method for an Open Channel under Complex Flow Conditions
2016
International Journal of Control and Automation
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This research designs a real-time on-line automatic measurement system, for the Pi River canal weir gate, that collects upstream and downstream water levels and the degree of opening of the gate. ...
construct a neural network model of high precision for on-line and real-time measurement. ...
Acknowledgements This work is supported partly by the National Natural Science Foundation of China (No.61263029, No.61374019) and the Natural Science Foundation of Jiangsu Province, China (No.BK20130851 ...
doi:10.14257/ijca.2016.9.7.33
fatcat:wfw4gk44k5fslcz5ngvfx2qr6u
High-resolution high-speed void fraction measurements in helically coiled tubes using X-ray radiography
2021
Nuclear Engineering and Design
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In the present paper, high-resolution measurements of the void fraction distribution for an adiabatic upward air-water two-phase flow were conducted in a transparent helically coiled acrylic pipe by means ...
Various void fraction based features such as probability density function estimates, profiles over the height of the pipe cross-section and temporal evolutions were used to identify and characterize flow ...
Acknowledgments The work presented herein was supported by the US Department of Energy's Nuclear Energy Advanced Modeling and Simulation (NEAMS) program as part of the Steam Generator Flow Induced Vibration ...
doi:10.1016/j.nucengdes.2020.110888
fatcat:nnisdf4abrcanf5xvwcmsz5c7e
Extended 3D-PTV for direct measurements of Lagrangian statistics of canopy turbulence in a wind tunnel
2019
Scientific Reports
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Direct estimation of Lagrangian turbulence statistics is essential for the proper modeling of dispersion and transport in highly obstructed canopy flows. ...
However, Lagrangian flow measurements demand very high rates of data acquisition, resulting in bottlenecks that prevented the estimation of Lagrangian statistics in canopy flows hitherto. ...
Acknowledgements The authors are grateful to Meni Konn, Sabrina Shlain, Gregory Gulitski, Valery Babin, Amos Shick and Mordechai Hotovely, for their assistance in preparing and performing the wind tunnel ...
doi:10.1038/s41598-019-43555-2
pmid:31092840
pmcid:PMC6520359
fatcat:ibwlxw27djealkrddbjw7h7rk4
Experimental Control of Turbulent Boundary Layers with In-plane Travelling Waves
2018
Flow Turbulence and Combustion
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The drag reduction was determined with constant temperature hot-wire measurements of the mean velocity gradient in the viscous sublayer, while simultaneous laser Doppler vibrometer measurements of the ...
The experimental control of turbulent boundary layers using streamwise travelling waves of spanwise wall velocity, produced using a novel active surface, is outlined in this paper. ...
at the measurement location, based on the uncontrolled flow. ...
doi:10.1007/s10494-018-9926-2
pmid:30069149
pmcid:PMC6044235
fatcat:7umjjwzixngkzio4iqthxmxy6y
Visualization system for the measurement of size and sphericity of char particles under combustion conditions
2016
Powder Technology
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Reliable kinetic data are critical for accurate simulations of coal combusted in the large industrial boilers used in the energy sector, and thus, they are a pre-requisite for computer aided boiler optimization ...
The applicability of available methods is limited to detecting and tracking particle size and position only under cold flow conditions being the main weakness of these methods. ...
The horizontal gas velocity profile u(y) is determined from a CFD simulation of the flow in the reactor performed for the same conditions as in the experiment. ...
doi:10.1016/j.powtec.2016.06.004
fatcat:6tv5xjuc3zd33ktzgwalvi3kiq
An Ultrasonic-Capacitive System for Online Characterization of Fuel Oils in Thermal Power Plants
2021
Sensors
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In addition, the ultrasonic system allows the estimation of the flow rate through the pipeline, hence estimating the amount of oil transferred and obtaining the total mass transferred as a feature of the ...
This paper presents a ultrasonic-capacitive system for online analysis of the quality of fuel oils (FO), which are widely used to produce electric energy in Thermal Power Plants (TPP) due to their elevated ...
Acknowledgments: The authors would like to thank Norte Energia S.A. and the Brazilian Research Agencies CNPq, CAPES, and ANEEL R&D for their support of this project. ...
doi:10.3390/s21237979
pmid:34883984
fatcat:i5j6jmqzpfapzmz2efjsjoohha
Preliminary Development Of A Hydrogen Peroxide Thruster
2013
Zenodo
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Green propellants used for satellite-level propulsion system become attractive in recent years because the non-toxicity and lower requirements of safety protection. ...
In the present research, an 1-Newton thruster prototype is designed and the thrusting force is measured by a pendulum-type platform. ...
ACKNOWLEDGMENT Authors would like to thank professor Chao and his research group at the National Cheng Kung University for their technical support and valuable discussions. ...
doi:10.5281/zenodo.1087286
fatcat:auebb3ofkfgldo2h32u2k7td5m
Development of Supersonic Vehicle for Demonstration of a Precooled Turbojet Engine
2009
TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES SPACE TECHNOLOGY JAPAN
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In this paper, the system configuration of the flight-testing vehicle is outlined and development status is reported. ...
In parallel to engine development activities, a new supersonic flight-testing vehicle for the hypersonic turbojet engine is under development since 2004. ...
Return to the launch site of the BOV Fig. 12. Altitude and velocity profile of the BOV Fig. 13. ...
doi:10.2322/tstj.7.tg_27
fatcat:55x42idkd5h6jgjrznjus4ipum
The prototype GAPS (pGAPS) experiment
2014
Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment
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2013 pre-print arXiv:1303.1615v1 fatcat:dqkb5bjbunbzdkljoqncvh5jz4
A prototype GAPS experiment (pGAPS) was successfully flown on a high-altitude balloon in June of 2012. ...
The General Antiparticle Spectrometer (GAPS) experiment is a novel approach for the detection of cosmic ray antiparticles. ...
Acknowledgements Funding for the pGAPS project has been provided by NASA grants in the US, by MEXT-KAKENHI grants in Japan, and the UCLA Division of Physical Sciences. ...
doi:10.1016/j.nima.2013.08.030
fatcat:2krc4jnzszdchke4brvowp5fpy
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