Pumping characterisation of the maxblend impeller for Newtonian and strongly non‐Newtonian fluids

摘要: This paper examines the pumping mechanisms generated by Maxblend impeller. Simulation results obtained with lattice Boltzmann method (LBM) are presented for Newtonian fluids (Re = 2–140) and strongly shear-thinning (Reg = 0.1–50) obeying Carreau–Yasuda model a very small power index (n = 0.05). In case, numbers predicted LBM shown to compare favourably those finite element (FEM) as well experimental data based on decolourisation method. These indicate capacity in deep laminar regime followed its sharp increase transitional regime, phenomenon which is explained examining flow field simulated FEM measured through PIV. case of shear thinning fluids, impact rheology investigated. The fields so-called volumes reveal, similarly change structure axial (secondary) radial when Reynolds number increased. Viscosity contours suggest that this fact related occurrence zones different apparent viscosities, explains problematic patterns observed experimentally