World's First Optical Venturi Flowmeter

2016 ◽  
Author(s):  
Ö. Haldun Ünalmis ◽  
Vishal V. Raul
Keyword(s):  
Venturi Flowmeter

Discharge Coefficient for Venturi Flowmeter With Short Laying Length

1982 ◽  
Vol 104 (4) ◽  
pp. 463-467
Author(s):  
Masahiro Inoue
Keyword(s):  
Experimental Data ◽  
Potential Flow ◽  
Total Pressure ◽  
Discharge Coefficient ◽  
Empirical Equation ◽  
Static Pressure ◽  
Computational Technique ◽  
One Dimensional ◽  
Streamline Curvature ◽  
Venturi Flowmeter

This paper presents a method for predicting the discharge coeffcient for a venturi flowmeter with a short laying length where the static pressure is not uniform at the throat due to streamline curvature. The discharge coefficient is determined by combining potential flow calculations and one-dimensional viscous flow considerations. For the potential flow, an accurate computational technique proposed by the author is used to calculate the pressure at the throat tap by assuming that the total pressure is equal to the average one at the throat. The average total pressure is related to the inlet pressure by use of a generalized empirical equation based on one-dimensional considerations. Validity of the method is verified by comparison with published experimental data for short venturi flowmeters.

scholarly journals Venturi flowmeter performance installed downstream of the branch of a tee junction

2020 ◽  
Vol 2 (5) ◽  
Author(s):  
Benjamin G. Sandberg ◽  
Michael C. Johnson ◽  
Zachary B. Sharp
Keyword(s):  
Tee Junction ◽  
Venturi Flowmeter

Theoretical, Numerical, and Experimental Study on an Unsteady Venturi Flowmeter for Incompressible Flows

2020 ◽  
Vol 143 (2) ◽  
Author(s):  
Izuru Kambayashi ◽  
Donghyuk Kang ◽  
Naoki Nishimura
Keyword(s):  
Flow Rate ◽  
Dynamic Characteristics ◽  
Energy Equation ◽  
Incompressible Flows ◽  
Euler Method ◽  
Pulsating Flow ◽  
Systematic Research ◽  
Flow Rates ◽  
Wide Range ◽  
Venturi Flowmeter

Abstract To examine the dynamic characteristics of turbomachinery and cavitation, the pulsating flow rates should be evaluated. As it is difficult to measure these pulsating flow rates quantitatively, systematic research has not been conducted on the dynamic characteristics of turbomachinery and cavitation. In this paper, an unsteady energy equation for a venturi tube has been proposed to measure pulsating flow rates. The pulsating flow rates were calculated using two methods based on the unsteady energy equation for incompressible flows. The first method calculated a pulsating flow rate by using the Euler method. The second one calculated the complex amplitude of a pulsating flow rate using a transfer function derived from the linearized unsteady energy equation. We analytically examined the order of magnitude for unsteady terms. The results indicated that the unknown unsteady loss was much smaller than the unsteady momentum. In the experiment, pulsating flows were generated by a reciprocating piston, and the given pulsating flow was measured using a hot wire anemometer. The pulsating flow rates evaluated by using the proposed methods were validated via numerical simulation and experiment. In particular, the influence of amplitudes on the evaluation of pulsating flow rates was numerically examined. Therefore, the nonlinear effect could be evaluated by using the proposed method, and the time-averaged loss coefficient was enough to evaluate the pulsating flow rate coefficient. The proposed unsteady venturi flowmeter can be applied to a wide range of research fields, such as analyzing dynamic characteristics of flows.

scholarly journals Performance analysis of a venturi flowmeter

2019 ◽  
Vol 1325 ◽  
pp. 012043
Author(s):  
Facai Ren ◽  
Xinghua Wu ◽  
Xiaoying Tang
Keyword(s):  
Performance Analysis ◽  
Venturi Flowmeter
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