| Fluid–Structure Interaction Analysis and Experimental Study for the Structural Safety of Hydrogen Refueling Nozzle |
| Ji Ah Choi1, Ju Hyeon Kim1, Sang Won Ji2 |
1Department of Mechanical System Engineering, Grad. School of Pukyong National University, 45, Yongso-ro, Nam-Gu, Busan, 48513, Republic of Korea
2Department of Mechanical System Engineering, Pukyong National University, 45, Yongso-ro, Nam-Gu, Busan, 48513, Republic of Korea |
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Received: October 28, 2024; Revised: December 10, 2024 Accepted: December 14, 2024. Published online: January 28, 2025. |
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| ABSTRACT |
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This study provides foundational research for the domestic development of hydrogen refueling station components by conducting coupled fluid–structure interaction analysis and experiments to evaluate the structural safety of existing hydrogen refueling nozzles. Using fluid-induced pressure as boundary conditions, the analysis assessed equivalent stresses and deformations and derived safety factors based on the yield strength of materials. While the majority of components were found to be structurally safe, a poppet-like component exhibited maximum equivalent stress and structural instability. This was validated by a pressure cycling test conducted according to ISO 19880-3, which revealed damage consistent with the analysis results. Therefore, modifications to the internal flow path of the poppet-like component are necessary. |
| Key Words:
Hydrogen refueling nozzle · Fluid–structure interaction analysis · Structural safety · Pressure cycling test |
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Corresponding Author.
Sang Won Ji , Email. 
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