Transient Flow Characteristic of High-Pressure Hydrogen Gas in Check Valve during the Opening Process

Jianjun Ye, Zhenhua Zhao, Jinyang Zheng, Shehab Salem, Jiangcun Yu, Junxu Cui and Xiaoyi Jiao
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Jianjun Ye: School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Zhenhua Zhao: School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Jinyang Zheng: Institute of Process Equipment, Zhejiang University, Hangzhou 310027, China
Shehab Salem: School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Jiangcun Yu: School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Junxu Cui: School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Xiaoyi Jiao: School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Energies, 2020, vol. 13, issue 16, 1-16

Abstract: In high-pressure hydrogen systems, the check valve is one of the most easy-to-damage components. Generally, the high-pressure hydrogen flow can generate a strong impact on the check valve, which can cause damage and failure. Therefore, it is useful to study the transient flow characteristics of the high-pressure hydrogen flow in check valves. Using dynamic mesh generation and the National Institute of Standards and Technology (NIST) real hydrogen gas model, a transient-flow model of the high-pressure hydrogen for the check valve is established. First, the flow properties of high-pressure hydrogen during the opening process is investigated, and velocity changes and pressure distribution of hydrogen gas flow are studied. In addition, the fluid force, acceleration, and velocity of the valve spool are analyzed quantitatively. Subsequently, the effect of the hydrogen inlet-pressure on the movement characteristic of the valve spool is investigated. The results of this study can improve both the design and applications of check valves in high-pressure hydrogen systems.

Keywords: check valve; high-pressure hydrogen; moving mesh; fluid force; movement characteristic (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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