Dynamic analysis of three-dimensional flow in the opening process of a single-disc butterfly valve

Wang, Lintao; Song, Xueguan; Park, Y C

doi:10.1243/09544062jmes1679

Cited by 11 publications

(6 citation statements)

References 4 publications

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“…10 To consider the high-Reynolds flow, the standard k-" model was used, which is the most frequently used model for turbulent flow. [15][16][17] Pressure and velocity correction was conducted by using the SIMPLEC algorithm. 18 Fluid flow analyses for rapid convergence and reliable results according to the applied turbulent model were considered as y þ , relevant boundary grids, and the aspect ratio.…”

Section: Flow Analysis Flow Analysis Methodsmentioning

confidence: 99%

Numerical performance and safety analyses of a retainer-type ball valve for use in a high-pressure district heating pipeline

Yang

Kim

Jeon

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part E:

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The performance and safety of a retainer-type ball valve have been evaluated for use in a high-pressure pipeline to a district heating plant. The retainer-type ball valve is a developed valve improving the defects of the leaks that may occur in the general valves such as the floating ball valve or trunnion ball valve. To verify the valve design, a numerical analysis of the design has been applied to investigate safety factors and to determine the flow coefficients for the DN300 and DN400 standard sizes. The conditions used for the numerical analysis was based on the international standards ISO 5208, IEC 60534-2-3, and a high-pressure pipeline to a district heating plant. The structural analysis results comprise deformations, equivalent stresses, and safety factors, and the flow analysis results show the flow coefficient, the pressure distribution, the velocity vectors, and the flow patterns for each rotation angle. These results confirmed the characteristics and reliability of the retainer-type ball valve and, based on these studies, we proposed a retainer-type ball valve as a solution to solve the leakage problem.

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Section: Flow Analysis Flow Analysis Methodsmentioning

confidence: 99%

Numerical performance and safety analyses of a retainer-type ball valve for use in a high-pressure district heating pipeline

Yang

Kim

Jeon

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part E:

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show abstract

“…precision solver, and the solver type is selected as pressure-based, velocity format is selected as absolute format, and time is selected as steady-state. The viscous model was opened and the Spalart-Allmaras model was selected for the solution [12] . In the boundary condition setting, since the maximum outflow velocity of the airflow source is 5.5m/s, the gas is not compressed in the pipe, the fluid medium is incompressible air, and the pipe outlet is set to free outflow; this simulation uses a constant flow rate, so the inlet is set to velocity inlet, and the irrelevance of the flow velocity is verified using a maximum of 5.5m/s and a minimum of 0.5m/s, and the irrelevance of the flow velocity is determined, so 1m/s as the simulation velocity.…”

Section: Introductionmentioning

confidence: 99%

Research and design of butterfly valve controller applied to museum gas pipeline network

yang,

zhaohua,

yan

2023

Third International Conference on Control and Intelligent Robotics (ICCIR 2023)

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“…Chern et al 5 used particle tracking flow visualization methods to study the internal flow characteristics and cavitation phenomena of a ball valve and its downstream pipeline. Wang et al 6 utilized the computational fluid dynamics (CFD) method to study the unsteady flow in the opening process of the single-disc butterfly valve and the performance of the butterfly valve. Edvardsen et al 7 discussed the change in single-phase pressure drop in a downhole gate valve through a combination of experimentation and simulation.…”

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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Dynamic analysis of three-dimensional flow in the opening process of a single-disc butterfly valve

Cited by 11 publications

References 4 publications

Numerical performance and safety analyses of a retainer-type ball valve for use in a high-pressure district heating pipeline

Numerical performance and safety analyses of a retainer-type ball valve for use in a high-pressure district heating pipeline

Research and design of butterfly valve controller applied to museum gas pipeline network

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

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