Analysis and Study of Flow Field Characteristics of Gate Valves under Different Openings based on CFD

Jihan Ye ； Hui Li ； Naichang Dai ； Xiang Feng ； Di Wang

《International Core Journal of Engineering》 10卷3期 (2024/03) Pp. 219-227

https://doi.org/10.6919/ICJE.202403_10(3).0026

摘要

Gate valve is a widely used valve in pipelines, which has flexible operation, fast opening speed, and small opening torque. It is mainly used to cut off and control fluid. This article uses the computational fluid dynamics software Flow Simulation to numerically simulate the internal flow field of a three-dimensional digital model of a gate valve. Through internal visualization processing, the pressure field, velocity field, and velocity trace field distribution of the gate valve under ten different openings are obtained. By comparing and analyzing the flow field distribution characteristics under different openings, the flow characteristics and distribution rules of the fluid medium inside the gate valve are understood. Especially at smaller openings, high-speed and low-pressure phenomena occur in the local area of the valve, causing fluid to generate vortices and leading to more turbulent flow fields. Through computational fluid dynamics analysis of gate valves, the understanding of valve structure design optimization by designers has been improved, and the accuracy of valve operation by on-site operators has been improved. This has practical guidance significance for valve design, manufacturing, and operation.

關鍵字

Gate Valve ； Computational Fluid Dynamics ； Flow Field ； Distribution Characteristics

參考文獻

Bernad S I , Susan-Resiga R .Numerical Model for Cavitational Flow in Hydraulic Poppet Valves[J].Modelling and Simulation in Engineering,2012,(2012-6-7), 2012, 2012(PT.1):10.

Qian J Y , Wei L , Zhang M ,et al.Flow rate analysis of compressible superheated steam through pressure reducing valves[J].Energy, 2017, 135(sep.15):650-658.

Li W G .Control of Volumetric Flow-Rate of Ball Valve Using V-Port[J].Journal of Fluids Engineering: Transactions of the ASME, 2004(3):126.

Quaini A,Quarteroni A.A semi-implicit approach for fluid-structure interaction based on an algebraic fractional step method[J].Mathematical models and methods in applied sciences.2007,17(6):957-983.

Badia S, Quaini A, Quarteroni A. Modular vs.non-modular preconditioners for fluid-structure systems with large added-mass effect[J],Computer Methods in Applied Mechanics and Engineering. 2008,197(49): 4216-4232.