Advanced SearchSearch Tips
Accelerating CFD-DEM simulation of dilute pneumatic conveying with bends
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Accelerating CFD-DEM simulation of dilute pneumatic conveying with bends
Du, Jun; Hu, Guoming; Fang, Ziqiang; Gui, Wenjie;
  PDF(new window)
The computational cost is expensive for CFD-DEM simulation, a larger time step and a simplified CFD-DEM model can be used to accelerate the simulation. The relationship between stiffness and overlap in non-linear Hertzian model is examined, and a reasonable time step is determined by a new single particle test. The simplified model is used to simulate dilute pneumatic conveying with different types of bends, and its applicability is verified by compared with the traditional model. They are good agreement in horizontal-vertical case and vertical-horizontal case, and show a significant differences in horizontal-horizontal case. But the key features of particle rope formed in different types of bends can be obtained by both models.
CFD-DEM;dilute pneumatic conveying;time step;
 Cited by
Tsuji Y., Tanaka T., Ishida T., 1992, "Lagrangian numerical simulation of plug flow of cohesionless particles in a horizontal pipe," Powder Technology, Vol. 71, No. 3, pp. 239-250. crossref(new window)

Zhu H.P., Zhou Z.Y., Yang R.Y., 2007, "Discrete particle simulation of particulate systems: Theoretical developments," Chemical Engineering Science, Vol. 62, No. 13, pp. 3378-3396. crossref(new window)

Zhu H.P., Zhou Z.Y., Yang R.Y., 2008, "Discrete particle simulation of particulate systems: A review of major applications and findings," Chemical Engineering Science, Vol. 63, No. 23, pp. 5728-5770. crossref(new window)

Malone K.F., Xu B.H., 2008, "Determination of contact parameters for discrete element method simulations of granular systems," Particuology, Vol. 6, No. 6, pp. 521-528. crossref(new window)

Teng S.L., Wang P., Zhang Q., 2011, "Analysis of Fluid Energy Mill by gas-solid two-phase flow simulation," Powder Technology, Vol. 208, No. 3, pp. 684-693. crossref(new window)

Tsuji Y., Kawaguchi T., Tanaka T., 1993, "Discrete particle simulation of two-dimensional fluidized bed," Powder Technology, Vol. 77, No. 1, pp. 79-87. crossref(new window)

Yuu S., Abe T., Saitoh T., 1994, "Three-dimensional numerical simulation of the motion of particles discharging from a rectangular hopper using distinct element method and comparison with experimental data (effects of time steps and material properties)," Advanced Powder Technology, Vol. 6, No. 4, pp. 259-269.

Kawaguchi T., Tanaka T., Tsuji Y., 1998, "Numerical simulation of two-dimensional fluidized beds using the discrete element method (comparison between the two- and three-dimensional models)," Powder Technology, Vol. 96, No. 2, pp. 129-138. crossref(new window)

Rhodes M.J., Wang X.S., Nguyen M., 2001, "Use of discrete element method simulation in studying fluidization characteristics: influence of interparticle force," Chemical Engineering Science, Vol. 56, No. 1, pp. 69-76. crossref(new window)

Brosh T., Kalman H., Levy A., 2014, "Accelerating CFD-DEM simulation of processes with wide particle size distributions," Particuology, Vol. 12, pp. 113-121. crossref(new window)

Lommen S., Schott D., Lodewijiks G., 2014, "DEM speedup: Stiffness effects on behavior of bulk material," Particuology, Vol. 12, pp. 107-112. crossref(new window)

Xu B.H., Yu A.B., 1997, "Numerical simulation of the gas-solid flow in a fluidized bed by combining discrete particle method with computational fluid dynamics," Chemical Engineering Science, Vol. 52, No. 16, pp. 2785-2809. crossref(new window)

Feng Y.Q., Yu A.B., 2004, "Assessment of model formulations in the discrete particle simulation of gas-solid flow," Industrial & Engineering Chemistry Research, Vol. 43, No. 26, pp. 8278-8290.

Zhou Z.Y., Kuang S.B., Chu K.Y., 2007, "Discrete particle simulation of particle-fluid flow: model formulations and their applicability," Journal of Fluid Mechanics, Vol. 661, pp. 482-510.

Chu K.W., Yu A.B., 2008, "Numerical simulation of the gas-solid flow in three-dimensional pneumatic conveying bends," Industrial & Engineering Chemistry Research, Vol. 47, No. 18, pp. 7058--7071. crossref(new window)

Alobaid F., Baraki N., Epple B., 2014, "Investigation into improving the efficiency and accuracy of CFD/DEM simulations," Particuology, Vol. 16, pp. 41-53. crossref(new window)

Mishra B.K., Murty C.V.R., 2001, "On the determination of contact parameters for realistic DEM simulations of ball mills," Powder Technology, Vol. 115, No. 3, pp. 290-297. crossref(new window)

Di Renzo A., Di Maio F.P.D., 2004, "Comparison of contact-force models for the simulation of collisions in DEM-based granular flow codes," Chemical Engineering Science, Vol. 59, No. 3, pp. 525-541. crossref(new window)

Moreno-Atanasio R., Xu B.H., Ghadiri M., 2007, "Computer simulation of the effect of contact stiffness and adhesion on the fluidization behaviour of powders," Chemical Engineering Science, Vol. 62, No. 1-2, pp. 184-194. crossref(new window)