Title: Three dimensional gas-solid riser flow simulation
Authors: Is Bunyamin Suryo; Tri Yogi Yuwono; Uwe Schnell
Addresses: Mechanical Engineering Department, Institut Teknologi Sepuluh Nopember (ITS), Surabaya, Indonesia ' Mechanical Engineering Department, Institut Teknologi Sepuluh Nopember (ITS), Surabaya, Indonesia ' Institut für Feuerungs-und Kraftwerkstechnik (IFK), Universitaet Stuttgart, Stuttgart, Germany
Abstract: In this paper, numerical simulations of three dimensional gas-solid riser flow using in-house computational fluid dynamics code are carried out and evaluated. This study employs the two-fluid model approach using the kinetic theory of granular flow in numerical simulations. This research utilised Wen-Yu, Syamlal et al. and Gidaspow drag models to calculate the momentum interaction between gas and solid phase. The restitution coefficient of 0.7 and two different time-steps are run to analyse the hydrodynamics flow in the riser. The radial profile comparison between numerical and experimental results is examined regarding axial solid volume fraction, gas, and solid velocities. Using the time step of 0.00015 s, numerical simulation using Syamlal et al.'s drag model obtains a good agreement with the experimental result.
Keywords: gas-solid riser flow; computational fluid dynamics; CFDs; two fluid model; kinetic theory of granular flow; KTGF; drag model.
Progress in Computational Fluid Dynamics, An International Journal, 2022 Vol.22 No.2, pp.83 - 93
Received: 13 Mar 2021
Accepted: 06 Aug 2021
Published online: 07 Apr 2022 *