Several types of dangerous phenomena (either natural or man-made) pose serious risk in many parts of the world. A fundamental task in hazard evaluation includes the prediction of the area influenced by the hazardous phenomenon, of its evolution in space and time, and the understanding of triggering mechanisms. This section mainly focuses on theoretical and numerical researches, especially those supported by computer-assisted techniques of computation. Different approaches might be taken: some mainly focus on the problem of time-sequential movements, by using either physical-based or empirical methods of analysis, others includes attempts to predict the evolution of a given natural phenomenon. Studies concerning innovative methods of modelling and simulation for hazard prevention purposes are welcome. Contributions on new techniques of simulation, case studies, and novel methods of model calibration and validation, as well as on sensitivity analyses are solicited. Comparative discussions on potential and limits of different modelling approaches are also within the scope of this session.