Experimental and numerical investigation on dynamic characteristic of nozzle check valve and fluid-valve transient interaction

Article Nuclear Science & Technology

Numerical simulation and experimental validation of flow characteristics for a butterfly check valve in small modular reactor

Qinglong Wen et al.

Summary: This study performed simulations and validations of the flow characteristics for a butterfly check valve in a small modular reactor using computational fluid dynamics (CFD) method. The results showed that the simulation results using the standard k-epsilon model agreed better with the experiment results, indicating the accuracy of this model in analyzing the natural circulation characteristics of small modular reactors.

NUCLEAR ENGINEERING AND DESIGN (2022)

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Article Energy & Fuels

Experimental Investigation of the Steady-State Flow Field with Particle Image Velocimetry on a Nozzle Check Valve and Its Dynamic Behaviour on the Pipeline System

Zhengbai Chang et al.

Summary: This study investigated the static characteristics and dynamic behavior of a nozzle check valve in industrial piping systems using an experimental bench and PIV technique. The research found that valve disc displacement increases with flow rate, pressure drop and flow obey a quadratic function when Reynolds number exceeds a certain value, and the local vortex area near the flow passage expands with flow improvement.

ENERGIES (2022)

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Article Engineering, Chemical

Study on Transient Flow and Dynamic Characteristics of Dual Disc Check Valve Mounted in Pipeline System during Opening and Closing

Zhengbai Chang et al.

Summary: This study numerically calculates the three-dimensional transient flow of a dual disc check valve and experimentally investigates its dynamic characteristics in a pipeline system. The findings can be useful in designing and selecting check valves and regulating the working conditions of piping systems.

PROCESSES (2022)

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Article Nuclear Science & Technology

An investigation of pressure build-up effects due to check valve's closing characteristics using dynamic mesh techniques of CFD

Nam-Seok Kim et al.

Summary: This study compared four different moving mesh techniques of CFD and found that these techniques can well describe the dynamic behavior of a swing check valve during closure, but there are differences in predicting the inflowing fluid velocity when the valve is fully closed.

ANNALS OF NUCLEAR ENERGY (2021)

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Proceedings Paper Engineering, Mechanical