Pollutant transportation prediction method based on smoothed particle fluid dynamics

The invention relates to a pollutant transportation prediction method based on smoothed particle fluid dynamics. The pollutant transportation prediction method is realized through the following steps: step 1, system initialization: initializing parameter information; 2, particles are generated, wherein fluid particles, inflow particles and outflow particles are generated; step 3, listing a discrete format of a control equation and a boundary condition applying mode, and performing iterative calculation: discretely describing the control equation of pollutant transportation by using an SPH method, and starting the iterative calculation from 0 moment based on an initial parameter condition; and 4, outputting a result, wherein the result comprises positions, speeds and concentrations of all types of particles at the final moment. According to the method, the change of the concentration under the condition of initial discontinuous distribution of pollutants can be accurately predicted, and a non-physical oscillat