Plutonium Aerosol Dispersion Data Set for Chemical Explosion Accidents in Underground Buildings

This data set contains the dynamic diffusion of plutonium aerosol in the first 60 seconds after a chemical explosion in a representative underground facility obtained by numerical simulation. The data generation process is as follows : Firstly, the chemical explosion source term is simulated by computational fluid dynamics ( CFD ) method. Subsequently, the discrete phase model ( DPM ) verified by experimental data was used to simulate the transport process of plutonium aerosol particles in a specific underground space. The core content of the data set is the concentration distribution of plutonium aerosol in facility space within 0 to 60 seconds after the accident. The data is presented in the form of a three-dimensional spatial field at a series of time points, providing a snapshot of particle diffusion over time. The spatial range covers the entire simulated underground facility, and its resolution is determined by the scale of the computational grid. The data set mainly contains multiple data files, recording information such as plutonium aerosol concentration at each time step and each spatial grid point. The concentration unit is mass concentration. The data file is a common standard format, which is convenient for post-processing and visualization using a variety of commonly used software. Since the data is the direct output of the numerical simulation, it fully reflects the information of all locations in the simulation domain, so there is no data missing. The uncertainty of the data is mainly due to the simplification of the physical model, the error of the turbulence simulation and the assumption of the explosion source term and the particle parameter setting.