Modeling and numerical simulation analysis of chemical plumes underwater

A new discrete chemical plume model based on CFD is established. The model uses CFD to calculate the turbulent environment of chemical plumes, and the chemical substances contained in the plume are modeled as a discrete phase. The basic characteristics of chemical plumes are obtained through the simulation calculation with the model: (1) the transport shape of chemical plumes is meandering; (2) instantaneous concentration of plumes at one point changes with time and the variation amplitude is large and irregular; (3)in a period of time the average concentration distribution of the cross section is Gaussian distribution. The results are consistent with the experimental results, verifying the rationality of the model, overcoming the shortcomings of the current models which are too simplified and poorly consistent with actual results, and providing the basis for the study of plume tracing.