CFD Analysis of the Hydrogen Tank Filling Process
International Innovation Science and Technology Conference, Muğla, Türkiye, 15 - 18 Mayıs 2026, ss.17-22, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Basıldığı Şehir: Muğla
- Basıldığı Ülke: Türkiye
- Sayfa Sayıları: ss.17-22
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Ankara Yıldırım Beyazıt Üniversitesi Adresli: Evet
Özet
In this study, the filling process of a high-pressure hydrogen tank is investigated using a transient Computational Fluid Dynamics (CFD) approach. The continuity, momentum, and energy equations are solved simultaneously, and the Redlich–Kwong real gas equation of state is employed to accurately represent the thermodynamic behaviour of hydrogen under high-pressure conditions. The tank is modelled as a two-dimensional axisymmetric domain under the assumption of axial symmetry, and the computational domain includes both the inlet nozzle and the internal volume of the tank. The results demonstrate the transient evolution of the pressure, temperature, and velocity fields inside the tank during the filling process. The pressure field exhibits a continuously increasing trend and gradually becomes more uniform, while the temperature field rises and spreads throughout the tank volume. The velocity field is dominated by a high-momentum jet at the inlet during the early stages of filling, and as the process progresses, the velocity levels decrease and the flow transitions toward a more quiescent regime. The findings indicate that the hydrogen filling process is a complex and strongly time-dependent problem that requires the coupled evaluation of flow dynamics and thermodynamic behaviour. This study shows that a CFD-based approach incorporating real gas effects provides a physically consistent and reliable framework for analysing the filling processes of high-pressure hydrogen storage tanks.