High-pressure hydrogen onboard storage rupture in a fire generates blast wave and fireball. These hazards are not yet investigated enough, especially in a tunnel. Consequences of such event, e.g. a blast wave, could be devastating depending on amount of stored hydrogen and tunnel dimensions. This raises the question about the dependence of blast wave overpressure on hydrogen inventory in the tank. The problem is studied here numerically. Large eddy simulation (LES) turbulence model with the eddy dissipation concept (EDC) for combustion were employed in series of numerical simulations in three different tunnel cross-sections with four hemispherical tank volumes at pressures of 94.5 MPa. The dependence of blast wave overpressure on hydrogen inventory is defined. The results are conservative and require experimental validation in tunnel tests.

International Seminar on Fire and Explosion Hazards (9; 2019; Saint Petersburg, Russia). Proceedings of the Ninth International Seminar on Fire and Explosion Hazards [Электронный ресурс]: 21-26 April 2019, Saint Petersburg, Russia. Vol. 2 / Peter the Great St. Petersburg Polytechnic University, Autonomous Non-Profit Organization "Fire and Explosion Safety", Gefest Holding Ltd ; [edited by A. Snegirev [et al.]. — Электрон. текстовые дан. (1 файл : 98,7 Мб). — Saint Petersburg, 2019. — Загл. с титул. экрана. — Свободный доступ из сети Интернет (чтение, печать, копирование). — Adobe Acrobat Reader 7.0. — <URL:http://elib.spbstu.ru/dl/2/k19-97.pdf>. — <URL:http://doi.org/10.18720/SPBPU/2/k19-97>.