An offset-method for Euler–Lagrange approach

摘要: Abstract An offset-method is applied to compute the inter-phase values in Euler–Lagrange approach. To investigate influence of on simulation accuracy and related additional computational time, numerical results obtained from Euler–Lagrange/Discrete Element Method are compared with measurements a lab-scale spouted fluidized bed. The show an improvement calculation up order magnitude. procedure depending fluid grid resolution, but independent solid loading. optimal ratio between size particle diameter range 2–3 suggested. effort rises increasing number particles. At same loading, particles smaller diameters cause more computing time. In second part this work, extended Euler–Euler model approach combined stochastic collision model. Two different fluidization mass flow rates used capability approaches for reproducing hydrodynamics behaviour gas–solid good agreement regarding regimes, bubble bed expansion. Discrepancies among models predicting dynamics formation are, however, observed. reasons these deviations, advantages limitations techniques reported.