Flow measurement and instrumentation flow control characteristics of throttling venturi valve with adjustable area

Yoon, Wangjung; Yoon, Ho-Sung; Ahn, Jonghyeon; Ahn, Kun-Hyuck

doi:10.1016/j.flowmeasinst.2021.102034

Cited by 10 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Usually, Lagrange motion formula is used to simulate the behavior of solid medium (particle motion), and Euler formula is used to simulate fluid flow (the behavior of fluid in a specific position in space). In the simulation of fluid–solid coupling of regulating valve, considering the fluid–solid coupling effect, any Lagrange Euler formula (ALE) can be used to describe the interaction between fluid and solid medium or fluid and free surface 30 , 31 . The ALE method is used to deal with the fluid–solid coupling of valve sleeve and valve core combination structure.…”

Section: Methodsmentioning

confidence: 99%

Structure improvement and parameter optimization of micro flow control valve

Chen

et al. 2023

Sci Rep

View full text Add to dashboard Cite

Aiming at the sticking phenomenon between the valve core and the valve sleeve when the valve core moves, and to solve the problem that the torque required to drive the valve core to rotate is large, the fluid–solid coupling simulation analysis of the valve core is carried out in this study, and then the valve core structure of the valve core is improved and its parameters are optimized based on the bird colony algorithm. The combination structure of the valve sleeve and valve core is studied, and the fluid–solid coupling model is established by Ansys WorkBench, and the static structure simulation analysis of valve sleeve and valve core before and after structural improvement and parameter optimization is performed. The mathematical models of triangular buffer tank, U-shaped buffer tank and combined buffer tank are established, and the structural parameters of the combined buffer tank are optimized by bird swarm optimization. The results demonstrate the triangular buffer tank has good depressurization effect but great impact, the pressure of the U-shaped buffer tank is stable and gentle but the depressurization effect is not ideal, while the combined buffer tank has obvious depressurization effect and good stability. At the same time, the optimal structural parameters of the combined buffer tank are cut-in angle of 72, plane angle of 60 and depth of 1.65 mm. The excellent structure and parameters of the combined buffer groove are obtained, so that the pressure buffer of the regulating valve at the key position of the valve port achieves the best effect, and an effective solution is provided for solving the sticking problem of the valve core of the regulating valve when working.

show abstract

Section: Methodsmentioning

confidence: 99%

Structure improvement and parameter optimization of micro flow control valve

Chen

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Under different opening conditions, due to the complexity of the valve working conditions, the pressure difference between the inlet and outlet gases is not stable. The results of the valve performance experiment show that when the pressure ratio ranges from 0.415 to 0.762, the valve flow, under the same opening conditions, is completely unrelated to the pressure behind the valve, according to which it is in a critical flow state and presents linear regulation characteristics [19,20]. Considering the constant pressure behind the valve, the influence of the change in pressure difference on the outlet gas flow rate was quantitatively studied.…”

Section: Influence Of Pressure Difference On Flow Accuracymentioning

confidence: 99%

“…pressure behind the valve, according to which it is in a critical flow state and p linear regulation characteristics [19,20]. Considering the constant pressure beh valve, the influence of the change in pressure difference on the outlet gas flow r quantitatively studied.…”

Section: Influence Of Pressure Difference On Flow Accuracymentioning

confidence: 99%

A Thermal Fluid–Solid Coupling Simulation of Gas Fuel Control Valves for High-Precision Gas Turbines

Pan

Luo

et al. 2023

Aerospace

View full text Add to dashboard Cite

Gas fuel control valves play important roles in the control of gas flow in high-precision gas turbines. To clarify the influence of coupling between the structure and the fluid system, a thermal fluid–solid coupling mechanism is presented based on numerical investigations carried out using a dynamic mesh technique. Valve core deformation can affect the outlet gas flow accuracy. At 2% valve opening, the gas temperature contributes 93% to the deformation. The effect of deformation on the flow accuracy at 6% valve opening and 4% valve opening is increased by 4.8% and 7.3%, respectively. The fluctuation range of the gas temperature and pressure in front of the valve should be strictly controlled to ensure the high precision and high stability of the outlet flow. These results help to clarify the processes that occur in the valve flow path, leading to the flow control instability observed in the control valve.

show abstract

“…There are two main ways to adjust the flow rate through the traditional fixed critical flow nozzle, if necessary. One is to adjust the inlet pressure [11,12], while the other is to change the nozzle throat size [13,14]. However, it is not economical to adjust the steam parameters.…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis of the Flow Characteristics of an Adjustable Critical-Flow Venturi Nozzle

Yuan¹,

Gao²,

Wang³

et al. 2023

Fluid Dynamics &Amp; Materials Processing

View full text Add to dashboard Cite

The response of an adjustable critical-flow Venturi nozzle is investigated through a set indoor experiments aimed to determine the related critical flow rate, critical pressure ratio, and discharge coefficient. The effect of a variation in the cone displacement and liquid content on the critical flow characteristics is examined in detail and it is shown that the former can be used to effectively adjust the critical flow rate. The critical pressure ratio of the considered nozzle is above 0.85, and the critical flow control deviation of the gas flow is within ±3%. Liquid flow can reduce the gas critical mass flow rate accordingly, especially for the cases with larger liquid volume and lower inlet pressure. The set of results and conclusions provided are intended to support the optimization of steam injection techniques in the context of heavy oil recovery processes. KEYWORDSAdjustable critical flow venturi nozzle; critical pressure ratio; critical mass flow rate; gas-liquid two-phase critical flow

show abstract

Flow measurement and instrumentation flow control characteristics of throttling venturi valve with adjustable area

Cited by 10 publications

References 15 publications

Structure improvement and parameter optimization of micro flow control valve

Structure improvement and parameter optimization of micro flow control valve

A Thermal Fluid–Solid Coupling Simulation of Gas Fuel Control Valves for High-Precision Gas Turbines

Experimental Analysis of the Flow Characteristics of an Adjustable Critical-Flow Venturi Nozzle

Contact Info

Product

Resources

About