Numerical validation of XiFoam-based simulations for hydrogen explosion in RUT Facility
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Hydrogen explosions pose significant industrial safety risks, requiring accurate numerical models for risk assessment. This study validates a XiFoam-based model for hydrogen explosion dynamics using pressure data from the KI-RUT-HYD09 experiment. Employing adiabatic wall boundary conditions and a large-eddy simulation (LES) turbulence model, the simulations effectively replicated peak overpressure and pressure-wave profiles. Surface-averaged pressure evaluations minimized discrepancies compared to point-probe measurements, and the ignition delay time was adjusted by +9 ms to align first-wave peaks. The model captured shockflame separation, initial shock velocities of ~3,000 m/s, shock attenuation, and flame-front propagation. These results confirm that the XiFoam model, with optimized parameters and turbulence closure, accurately reproduces overpressure dynamics and key phenomena of large-scale hydrogen explosions, providing a reliable tool for safety analysis.
Abstract
Hydrogen explosions pose significant industrial safety risks, requiring accurate numerical models for risk assessment. This study validates a XiFoam-based model for hydrogen explosion dynamics using pressure data from the KI-RUT-HYD09 experiment. Employing adiabatic wall boundary conditions and a large-eddy simulation (LES) turbulence model, the simulations effectively replicated peak overpressure and pressure-wave profiles. Surface-averaged pressure evaluations minimized discrepancies compared to point-probe measurements, and the ignition delay time was adjusted by +9 ms to align first-wave peaks. The model captured shockflame separation, initial shock velocities of ~3,000 m/s, shock attenuation, and flame-front propagation. These results confirm that the XiFoam model, with optimized parameters and turbulence closure, accurately reproduces overpressure dynamics and key phenomena of large-scale hydrogen explosions, providing a reliable tool for safety analysis.