Design and Evaluation of a Sound Based Water Flow Measurement System

2008 ◽  
pp. 41-54 ◽  
Author(s):  
Alejandro Ibarz ◽  
Gerald Bauer ◽  
Roberto Casas ◽  
Alvaro Marco ◽  
Paul Lukowicz
Keyword(s):  
Water Flow ◽  
Measurement System ◽  
Flow Measurement

Design and development of a novel water flow measurement system

Measurement ◽  
2017 ◽  
Vol 105 ◽  
pp. 120-129 ◽  
Author(s):  
Shiv Kumar Jaiswal ◽  
Sanjay Yadav ◽  
Ravinder Agarwal
Keyword(s):  
Water Flow ◽  
Measurement System ◽  
Flow Measurement ◽  
Design And Development

Investigation of the influence of the flow structure on the accuracy of flow measurement before a hydrometric structure in an open channel

2020 ◽  
pp. 41-44
Author(s):  
Anatoly Kusher
Keyword(s):  
Velocity Profile ◽  
Flow Velocity ◽  
Water Flow ◽  
Flow Measurement ◽  
Water Discharge ◽  
Critical Depth ◽  
Flow Measurements ◽  
Study Results ◽  
Flow Velocity Profile ◽  
Upstream Flow

The reliability of water flow measurement in irrigational canals depends on the measurement method and design features of the flow-measuring structure and the upstream flow velocity profile. The flow velocity profile is a function of the channel geometry and wall roughness. The article presents the study results of the influence of the upstream flow velocity profile on the discharge measurement accuracy. For this, the physical and numerical modeling of two structures was carried out: a critical depth flume and a hydrometric overfall in a rectangular channel. According to the data of numerical simulation of the critical depth flume with a uniform and parabolic (1/7) velocity profile in the upstream channel, the values of water discharge differ very little from the experimental values in the laboratory model with a similar geometry (δ < 2 %). In contrast to the critical depth flume, a change in the velocity profile only due to an increase in the height of the bottom roughness by 3 mm causes a decrease of the overfall discharge coefficient by 4…5 %. According to the results of the numerical and physical modeling, it was found that an increase of backwater by hydrometric structure reduces the influence of the upstream flow velocity profile and increases the reliability of water flow measurements.

Real-time air flow measurement system for use by speech therapists

1991 ◽  
Vol 29 (1) ◽  
pp. 98-101 ◽  
Author(s):  
G. McCurrach ◽  
A. L. Evans ◽  
D. C. Smith ◽  
M. T. Gordon ◽  
M. B. D. Cooke
Keyword(s):  
Real Time ◽  
Measurement System ◽  
Flow Measurement ◽  
Air Flow ◽  
Speech Therapists

Invariant method for measuring wet gas flow rate

2021 ◽  
pp. 13-19
Author(s):  
Zhanat А. Dayev ◽  
Gulzhan E. Shopanova ◽  
Bakytgul А. Toksanbaeva
Keyword(s):  
Flow Rate ◽  
Measurement System ◽  
Flow Measurement ◽  
Gas Flow ◽  
Test Results ◽  
Invariant System ◽  
Rate Measurement ◽  
Gas Flow Rate ◽  
Flow Rate Measurement ◽  
Wet Gas

The article deals with one of the important tasks of modern flow measurement, which is related to the measurement of the flow rate and the amount of wet gas. This task becomes especially important when it becomes necessary to obtain information about the separate amount of the dry part of the gas that is contained in the form of a mixture in the wet gas stream. The paper presents the principle of operation and structure of the invariant system for measuring the flow rate of wet gas, which is based on the combined use of differential pressure flowmeters and Coriolis flowmeters. The operation of the invariant wet gas flow rate measurement system is based on the simultaneous application of the multichannel principle and the partial flow measurement method. Coriolis flowmeters and the differential pressure flowmeter are used as the main elements of the system. The proposed measurement system does not offer applications for gases with abundant drip humidity. The article provides information about the test results of the proposed invariant system. The estimation of the metrological characteristics of the invariant system when measuring the flow rate of wet gas is given. The obtained test results of the invariant wet gas flow rate measurement system are relevant for natural gas production, transportation, and storage facilities.

The Study and Design of a UDP Flow Measurement System

2013 ◽  
Vol 278-280 ◽  
pp. 946-949
Author(s):  
Hai Feng Guo
Keyword(s):  
Complex Network ◽  
Measurement System ◽  
Flow Measurement ◽  
Data Flow ◽  
Comparison Function ◽  
Data Sets ◽  
Network Environment ◽  
Network Bandwidth ◽  
Packet Capture ◽  
The One

Proposed a way to UPD flow and UPD system ideology. The system is considered the one-way characteristics of UDP flow in the backbone of the network, used the WinPcap packet capture technology. The system including network packet captures module, packet replay module, packets spell flow module, UDP analysis module, while using the map template classes in stl, improved the performance of UDP packets through a comparison function with efficient custom;Contrast to the data characteristics under the complex network environment, the system adopts the step-by-step small tools design way to facilitate the system to expand new analysis function. Through the three sets of data : a backbone data sets and two DARPA1999 data sets, it can be seen that the overall development of UDP data flow is expanding the network bandwidth , and small UDP flows is more.The quicker network bandwidth development, the shorter the UDP flows average time.

scholarly journals Development of Wind in Flow Measurement System Using 9-Beam Nacelle Lidar

2018 ◽  
Vol 07 (04) ◽  
Author(s):  
Hirokazu Kawabata ◽  
Yoshihiro Kikushima ◽  
Tetsuya Kogaki
Keyword(s):  
Measurement System ◽  
Flow Measurement

scholarly journals Exhaust Gas Flow Measurement System - CRADA Final Report

1997 ◽  
Author(s):  
J Hardy ◽  
R Abston ◽  
J Hylton ◽  
T McKnight ◽  
R Joy ◽  
...  
Keyword(s):  
Measurement System ◽  
Flow Measurement ◽  
Gas Flow ◽  
Final Report ◽  
Exhaust Gas

scholarly journals Reliability of the RBMK-1000 coolant flow measurement system

2019 ◽  
Vol 5 (1) ◽  
pp. 81-87
Author(s):  
Arkady I. Pereguda
Keyword(s):  
Mathematical Model ◽  
Measurement System ◽  
Flow Measurement ◽  
Rotation Period ◽  
Operation Time ◽  
Operational Reliability ◽  
Coolant Flow ◽  
Reliability Indicators ◽  
Parametric Reliability ◽  
Two Parameters

An analysis of statistical data of diagnostic measurements of two parameters determining the performance of the RBMK-1000 SHADR-8A flowmeters – the minimum value of the negative amplitude half-wave at the transistor flow measuring unit (TIBR) input and the mean-square deviation over the flowmeter ball rotation period – made it possible to develop a mathematical model of the flowmeter parametric reliability. This mathematical model is a random process, which is a superposition of two delayed renewal processes. Studying the flowmeter operational reliability model provides an exponential estimate of the probability that the parameters determining the flowmeter performance will not exceed the specified levels. Using the Bernoulli scheme and the probability-estimating relationship for the flowmeter performance parameters, it is possible to calculate the probability of failure-free operation of both a single reactor quadrant and the coolant flow measurement system. In addition, it becomes possible to estimate the quadrant failure rate. Important for practice is the possibility of predicting the number of failed flowmeters depending on the system operation time. An indicator of the system reliability can be the average number of failed flowmeters, the relation for which is given in the paper. All the research results were obtained without any additional assumptions about the random values distribution laws. The obtained results can be easily generalized for the cases when the vector dimension of the determining parameters is greater than two. The use of the results of this study is illustrated by calculated quantitative values of the flowmeter parametric reliability indicators and the coolant flow measurement system.

Microprocessor-Based Flow Measurement System

1985 ◽  
Vol IE-32 (2) ◽  
pp. 103-107
Author(s):  
P. K. Chande ◽  
P. C. Sharma
Keyword(s):  
Measurement System ◽  
Flow Measurement
Sign in / Sign up

Export Citation Format

Share Document