Comprehensive molecular dynamic simulations were carried out to compute the viscosity and density of three commonly used chloride molten salts and their binary mixtures over a wide operating temperature range.Compared with the experimental data, the absolute relative error of the simulation results of the density and viscosity for the three kinds of chloride molten salts are all within 9.3% and 9.4%,respectively,the comprehensive results showed that the simulation results are in good agreement with the experimental values.The molecular dynamic simulations and Eyring model and molecular dynamic&theoretical caculation(MD-TC)were utilized for viscosity of binary chloride molten Salts.Compared with the experimental results,the MD-TC got more accurate results among three methods,the average error between the viscosity results of KCl-LiCl and the experimental values is only 2.03%.The results showed that it is feasible to calculate the viscosity of mixed chloride molten salts by MD-TC.In order to better understand the thermophysical properties of chloride molten salts at a molecular level, the partial radial distribution functions were calculated and local structures were analyzed. The results and methods put forth in this paper offer reference and guiding value for practical application of heat storage based on mixed chloride molten salts.
