عنوان	CFD Simulation of Solid Hold-Up in Gas-Solid Fluidized Bed at High Gas Velocities
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Solid hold-up,CFD,fluidized bed,two-fluid model
چکیده	CFD simulation results of gas–solid fluidized bed using 2D Eulerian–Eulerian approach at high gas velocities integrating the kinetic theory of granular flow are presented. The range of gas velocities are from 0.35 to 2.19m/s. Predicted particle motion and bubble behavior in the bed are consistent with the literature data. Simulation results indicate that Arastoopour's drag model is the best choice for the current system. Laminar flow and turbulent models, standard k-? and Simonin, are compared at Ug = 2.19m/s. CFD results show that Simonin model can be used at high gas velocities, reasonably. Current model reduces simulations errors compared with previous works. The minimum error is 6.5% and the maximum error is 13% in lower and upper part of the bed in radial direction, respectively.
پژوهشگران	سید حسین حسینی (نفر اول)، مرتضی زیودار (نفر دوم)، رهبر رحیمی (نفر سوم)، عبدالرضا صمیمی (نفر چهارم)