A Dynamic Evaluation Technique for Liquid Flow Meters Based on Hydraulic Line Dynamics

1997 ◽  
Vol 119 (2) ◽  
pp. 305-307
Author(s):  
Guangzheng Peng ◽  
Tong Zhao
Keyword(s):  
Dynamic Characteristics ◽  
Liquid Flow ◽  
Experimental Verification ◽  
Microcomputer System ◽  
Evaluation Technique ◽  
Flow Meters ◽  
Pressure Transducers ◽  
Dynamic Technique ◽  
Frequency Domains ◽  
Flow Generator

A new concept for the evaluation of flowmeter dynamic response is presented. A technique based on hydraulic line dynamics is applied to achieve accurate measurements of the reference flowrate. The major components in the equipment used in experimental verification of the theory were a test pipe, a pulsating flow generator, three pressure transducers, an A/D converter, and a microcomputer system. This equipment allowed the dynamic characteristics of a flowmeter to be investigated in both the time and frequency domains. Comparisons of flowrates measured using the line dynamic technique and the same flowrates recorded by the flowmeter are presented. The results confirm the feasibility and practicability of the dynamic line technique for measuring rapidly varying flows.

An Efficient Method for Simulating Frequency-Dependent Friction in Transient Liquid Flow

1975 ◽  
Vol 97 (1) ◽  
pp. 97-105 ◽  
Author(s):  
A. K. Trikha
Keyword(s):  
Liquid Flow ◽  
Method Of Characteristics ◽  
Computation Time ◽  
Approximate Expression ◽  
Test System ◽  
Exact Expression ◽  
Frequency Dependent ◽  
Efficient Procedure ◽  
Liquid Line ◽  
Frequency Domains

An efficient procedure is developed for simulating frequency-dependent friction in transient laminar liquid flow by the method of characteristics. The procedure consists of determining an approximate expression for frequency-dependent friction such that the use of this expression requires much less computer storage or computation time than the use of the exact expression. The derived expression for frequency-dependent friction approximates the exact expression very well in both time and frequency domains. Calculated results for a test system are compared with the experimental results so show that the approximate expression predicts accurately the surge pressures, pressure wave distortion as well as pressure attenuation in a liquid line.

Dynamic characteristics of a liquid-flow stabilizer

1980 ◽  
Vol 23 (12) ◽  
pp. 1109-1113
Author(s):  
K. P. Podkopaev ◽  
M. A. Danilov ◽  
A. I. Bondarenko ◽  
L. G. Ershova
Keyword(s):  
Dynamic Characteristics ◽  
Liquid Flow ◽  
Flow Stabilizer

Non-Invasive Methods of Liquid Flow Expenditure Monitoring Using Overhead Transducers Taking into Account Deposits in Pipelines

NDT World ◽  
2020 ◽  
pp. 34-37
Author(s):  
Polina Popova
Keyword(s):  
Flow Rate ◽  
Liquid Flow ◽  
Operating Conditions ◽  
Ultrasonic Transducers ◽  
Flow Meters ◽  
Non Invasive ◽  
Methods Of Calculation

The article is devoted to the problems of using flow meters with ultrasonic transducers in real operating conditions in the presence of deposits on the walls of pipelines. Methods of calculation and accounting of deposits in determining the flow rate of liquids are presented. Errors of flow rate and flow rate measurements depending on thickness of deposits for different pipe sizes were analyzed.

Determination of the dynamic characteristics of adhesiveless strain gage pressure transducers

1989 ◽  
Vol 32 (1) ◽  
pp. 52-56 ◽  
Author(s):  
V. I. Pechuk ◽  
V. M. Zakharenko ◽  
V. Yu. Skripchuk ◽  
A. Yu. Shvets
Keyword(s):  
Strain Gage ◽  
Dynamic Characteristics ◽  
Pressure Transducers ◽  
Gage Pressure

Dynamic Characteristics Analysis of Two-DOF Oscillatory Actuator and Experimental Verification of Prototype

2011 ◽  
Vol 131 (9) ◽  
pp. 1165-1170
Author(s):  
Yoshimoto Takamichi ◽  
Katsuhiro Hirata ◽  
Yasuyoshi Asai ◽  
Kenji Ueyama ◽  
Eiichiro Hashimoto ◽  
...  
Keyword(s):  
Dynamic Characteristics ◽  
Experimental Verification ◽  
Characteristics Analysis ◽  
Dynamic Characteristics Analysis
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