Flow Characteristics and Stress Analysis of a Parallel Gate Valve

Wu, Hui; Li, Junye; Gao, Zhi-xin

doi:10.3390/pr7110803

Cited by 9 publications

(5 citation statements)

References 31 publications

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“…Conversely, the lowest values were found for valve Ga1. This is consistent with the results obtained in the study conducted byWu, Li and Gao (2019), where even for a diameter different from those studied for this paper, the K for a fully open gate valve exhibited values close to 0. For valves Pr1 and…”

supporting

confidence: 93%

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Hydraulic behavior of valves used in building water supply systems

Nhamussua,

Thebaldi,

Lima

et al. 2023

Eng. Sanit. Ambient.

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This study was developed with the objective of evaluating the steady-state hydraulic behavior of gate, ball, and pressure valves with nominal diameters of ½” and ¾”, which are widely used in building water supply networks in Brazil. For this purpose, tests were performed to determine the head loss in ten different valves in four openings with five replicates. A hydraulic head loss testing apparatus was set up in a pipeline network that allowed for the control, monitoring, and acquisition of data. Mean values of the K coefficient of the minor head loss and the equivalent length were estimated for the conditions evaluated. The results were analyzed using box plots, correlation, principal components analysis, and hierarchical clustering. In general, the gate valves showed lower head loss for all the relative openings considered, while the pressure valves showed the greatest head loss. Of the clusters formed, for the second group, there was a predominance of treatments with pressure valves, which showed similarity in terms of the values of the hydraulic variables due to the geometry and construction of the valves.

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supporting

confidence: 93%

“…According to Wu, Li and Gao (2019), who investigated the hydraulics of a gate valve, the opening degree of the valve has a great influence on Q and K,…”

Section: Resultsmentioning

confidence: 99%

Hydraulic behavior of valves used in building water supply systems

Nhamussua,

Thebaldi,

Lima

et al. 2023

Eng. Sanit. Ambient.

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“…Wu et al [19] studied the flow and loss coefficients in a wedge-type double disk parallel gate valve. Effects of the Reynolds number, valve opening degree and groove depth were analyzed.…”

Section: Smart Flow Control In Valvesmentioning

confidence: 99%

Special Issue: Smart Flow Control in Micro Scale

Qian

Zhang

et al. 2020

Processes

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“…Palau-Salvador et al 19 conducted a 3D steady-state numerical simulation to study the effects of the geometric structure of the valve core outlet on the internal flow and hydraulic characteristics of a regulating valve. Wu et al 20 conducted a CFD analysis of a wedge-type, double-disc, parallel gate valve and investigated the influence of different working conditions on the gate valve flow rate and loss coefficient. Yang et al 21 used CFD and finite element method (FEM) analyses to study flow characteristics and safety performance of a retainer-type ball valve.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of transient valve-induced flow characteristics between opening and closing processes

Liu

Tian

Wang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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Transient control of process valves, including opening and closing processes, is consistently encountered in many fluid transportation and control industries. During opening and closing processes, valve-induced transient flow presents different unstable flow characteristics. This transient valve-induced unstable flow that develops along the pipeline can cause violent pressure and velocity fluctuations that considerably influence accurate flow measurement downstream. In this paper, gate valve-induced flow characteristics during opening and closing processes were comparatively studied. An experimental system was developed to monitor the downstream pressure along the pipeline, and corresponding transient numerical simulations were performed on opening and closing processes using a user-defined function and dynamic grid technology. The pressure distributions along the pipeline's downstream area during valve opening and closing processes were investigated to verify the accuracy of the numerical simulation. The mechanism of transient flow difference under the same valve opening during opening and closing processes was determined to be a hysteresis effect. The jet flow intensity under a small valve opening in the opening process was greater than that in the closing process, and the difference in flow field under the 50% valve opening was the largest. Moreover, the velocity and turbulent kinetic energy distributions in different downstream cross-sections during valve opening and closing processes were comparatively analyzed. The change rate of the maximum turbulent kinetic energy was introduced to further analyze the different effects of opening and closing processes on the transient flow stability downstream of the valve. Results showed that the flow stability between 40% and 50% valve opening was the worst irrespective of the adjustment process, that is, a large pipeline distance was required to stabilize this transient flow. This study helps in understanding transient valve-induced flow characteristics in fluid transportation pipelines and provides guidance for accurate flow metering industrial applications.

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Flow Characteristics and Stress Analysis of a Parallel Gate Valve

Cited by 9 publications

References 31 publications

Hydraulic behavior of valves used in building water supply systems

Hydraulic behavior of valves used in building water supply systems

Special Issue: Smart Flow Control in Micro Scale

Comparative analysis of transient valve-induced flow characteristics between opening and closing processes

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