Computational Modeling of Flow Rate Measurements Using an Orifice Flow Meter

2018 ◽  
Author(s):  
YiQin Xu ◽  
Daniel Coxe ◽  
Yulia Peet ◽  
Taewoo Lee
Keyword(s):  
Measurement Uncertainty ◽  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Rate Measurement ◽  
Flow Rate Measurement ◽  
Flow Meters ◽  
Commercial Code ◽  
Orifice Flow ◽  
Orifice Flow Meter

This study is concerned with understanding and improvement of mass flow rate measurement uncertainty and errors encountered at low flow rates and start-up in commercially available flow rate measurement devices, such as orifice flow meters. The flow through a typical cylindrical flange-tapped orifice flow meter is modeled computationally so the actual mass flow rate is known a-priori. Empirical predictions from the reading of “virtual” pressure sensors are compared with the actual flow rate and the measurement errors are quantified and analyzed. Commercial code ANSYS-Fluent is compared in this study to the in-house high-fidelity spectral-element solver Nek5000, so that conclusions about the applicability of a commercial code to the calculations of measurement uncertainty in the orifice flow meters can be made.

A Comparison of the Multi-Venturi Meter to Other Low-Loss Fluid Meters

1973 ◽  
Vol 95 (1) ◽  
pp. 142-146
Author(s):  
E. D. Klomp ◽  
G. Sovran
Keyword(s):  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
High Signal ◽  
Rate Measurement ◽  
Flow Rate Measurement ◽  
Low Loss ◽  
Flow Meters ◽  
General Mass ◽  
Unique Potential

A comparison of the multi-venturi type meter with other fluid meters has been made. A multi-venturi type meter is one having two or more venturis cascaded in such a manner that the discharge plane of smaller venturis is positioned in the throat of larger venturis. Although the concept of venturi cascading dates back to around 1880, its unique potential in general mass-flow-rate measurement applications has not been exploited. The primary advantages of the multi-venturi type meter are that it generates significantly less loss than conventional venturis, particularly at high signal magnifications, and has a much broader flow range. As a result of the latter characteristic, a single multi-venturi meter could be used to replace two or three conventional flow meters in some fluid-metering applications.

Electrostatic Sensor for Real–Time Mass Flow Rate Measurement of Particle Conveying in Pneumatic Pipeline

2012 ◽  
Author(s):  
Mohd. Fua’ad Rahmat ◽  
Wee Lee Yaw
Keyword(s):  
Real Time ◽  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Cross Correlation ◽  
High Accuracy ◽  
Industrial Processes ◽  
Rate Measurement ◽  
Flow Rate Measurement ◽  
Controlled Flow

This paper discussed the electrostatic sensors that have been constructed for real–time mass flow rate measurement of particle conveying in a Pneumatic pipeline. Many industrial processes require continuous, smooth, and consistent delivery of solids materials with a high accuracy of controlled flow rate. This requirement can only be achieved by installing a proper measurement system. Electrostatic sensor offers the most inexpensive and simplest means of measuring solids flows in pipes. Key words: Electrostatic sensor, cross-correlation, peripheral velocity

Review Of Mass Flow Rate Measurement Methods In Pneumatic Conveyor

2012 ◽  
Author(s):  
Herlina Abdul Rahim ◽  
Akmal Hayati Rusli ◽  
Nor Saradatul Akmar Zulkifli
Keyword(s):  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Measurement Methods ◽  
Rate Measurement ◽  
Flow Rate Measurement ◽  
Capacitance Sensor ◽  
Microwave Sensor ◽  
Rate Sensor ◽  
Imaging Sensor

Kertas kerja ini menjelaskan beberapa jenis penggunaan penderia untuk mengukur laju aliran pepejal yang mengalir di penghantar pneumatik. Setiap penderia akan menggunakan prinsip yang berbeza tetapi kebanyakan darinya mampu mencapai kesilapan homogen sebanyak 10%. Teknik–teknik ini termasuk penderia kapasitan, penderia elektrostatik, penderia gelombang mikro, penderia radiologi, kombinasi penderia elektrostatik dan digital imej dan lain–lain. Reka bentuk penderiaan harus seragam, maka zarah yang ada dalam kawasan penderiaan akan memberikan hasil yang sama terhadap isyarat mengalir. Kata kunci: Aliran pepeja; penderia; penghantar pneumatic; kaedah pengukuran This paper describes several types of sensor use in measuring mass flow rate of solids flowing in pneumatic conveyors. Each sensor will applied different principle but most of them are able to achieve 10% homogeneity error. These sensor techniques include capacitance sensor, electrostatic sensor, microwave sensor, radiological sensor, combination of electrostatic and digital imaging sensor and others. The sensing filed designs need to be uniform, thus particles exist within the sensing field will contribute equally to the flow signal. Key words: Mass flow rate; sensor; pneumatic conveyor; measurement methods

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