The effect of numerical diffusion and the influence of computational grid over gas-solid two-phase flow in a bubbling fluidized bed - Braun, Meire Pereira de Souza; Mineto, Andreza Tangerino; Navarro, Hélio Aparecido; Cabezas Gómez, Luben; Silva, Renato César da (Mathematical and Computer Modelling, 2010)