Direct numerical simulations of dynamic gas‐solid suspensions

• DOI: 10.1002/aic.15197
• Publication Date: 2016-02-04T23:00:12Z
• Authors: Yali Tang; E. A. J. F. Peters; J. A. M. Kuipers
• Keywords: Particle (ecology); Momentum (technical analysis)

Direct numerical simulation results for gas flow through dynamic suspensions of spherical particles is reported. The simulations are performed using an immersed boundary method, with careful correction the grid resolution effect. systems we have studied vary mean Reynolds number, solids volume fraction, as well particle/gas density ratio. On basis results, effect particle mobility on gas‐solid drag force analyzed and introduced into existing correlation that was derived from stationary particles. This characterized by granular temperature, which a result velocity fluctuation. modified considered so‐far most accurate expression interphase momentum exchange in computational fluid dynamics models, interactions not directly resolved. © 2016 American Institute Chemical Engineers AIChE J , 62: 1958–1969,