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In a future energy generation market, the storage of energy is going to become increasingly important. Besides classic ways of storage, like pumped storage hydro power stations, etc, the production of hydrogen will play an important role as an energy storage system. Hydrogen may be stored as a liquefied gas (LH2) on a long term base as well as for short term supply of fuel stations to ensure a so called “green” mobility. The handling with LH2 has been subject to several recent safety studies. In this context reliable simulation tools are necessary to predict the spill and spreading of LH2 during an accidental release. This paper deals with the different boiling regimes: film boiling, transition boiling and nucleation boiling after a release and their modeling by means of an inhouse-code for wall evaporation, which is implemented in the commercial CFD code ANSYS CFX. The paper will describe the model, its implementation and validation against experimental data, such as the HSL LH2 spill experiments [1]

3D Modeling of the Different Boiling Regimes During Spill and Spreading of Liquid Hydrogen