TEMOM Method for Nanoparticle Brownian Coagulation in the Entire Size Regime

【摘要】：正Through applying the Taylor-expansion technique to the particle general dynamic equation,the newly proposed moment method(TEMOM) is extended to solve Brownian coagulation in the entire size regime.To make a fair comparison between this new method and other known methods in efficiency and accuracy in the full regime,the same Dahneke's coagulation kernel is used in all the models.As a comparison,the Harmonic coagulation kernel is also applied in this new model and the Pratsinis's moment model(PMM). Furthermore,the results produced by the quadrature method of moments(QMOM3) and the sectional method(SM) using Dahneke's coagulation kernel are also presented,and the SM is used here as the reference model.Compared to other models,the TEMOM using Dahneke's kernel is considered to give the most accurate results with a high efficiency,and it is proposed to be used in the following studies for nanopraticle evolution due to Brownian coagulation.Based on the analysis for self-preserving process,the index for geometric mean deviation used in the PMM is proved to be also valid in the TEMOM model and the QMOM model.