Large eddy simulation-bivariate sectional model for non-spherical TiO2 nanoparticle synthesis in flame

•A new simulation approach coupling large-eddy simulation (LES) and bivariate sectional model is first proposed.•Simulation of non-spherical TiO2 nanoparticle synthesis in turbulent flame.•Simultaneously predicting the spatiotemporally evolution of nanoparticle size, morphology, and polydispersed size distribution.•Investigation of the temporal fluctuations of aggregate and primary particle size distributions.