Artículos de revistas
Validation Of The Three-dimensional Model For The Dilute Gas-solid Flow In Horizontal And Vertical Ducts, By Computational Fluid Dynamic (cfd) Techniques [validação De Modelo Tridimensional Para O Escoamento Gás-sólido Diluído Vertical E Horizontal, Por Técnicas De Fluidodinâmica Computacional (cfd)]
Registro en:
Boletim Tecnico Da Petrobras. , v. 47, n. 1, p. 88 - 100, 2004.
16772598
2-s2.0-18744373361
Autor
Decker R.K.
Meier H.F.
Mori M.
Institución
Resumen
A study was carried out to apply and corroborate the three-dimensional, transient, inviscid model, for the horizontal and vertical particle conveying, by comparing the numerical results with experimental data. For the solutions of the partial differential equation models, the commercial code CFD was employed, the CFX, based on the numerical method of finite volumes for the numerical discretization. The pressure-velocity coupling by SIMPLEC algorithm, κ-ε turbulence default model, and first order differential scheme (UPWIND), were used as strategies to guarantee convergence and stability of the numerical solution. Comparison of the results with published data showed good agreement. A case study was made to determine the effect of a self-cleaning elbow in the horizontal transport section, over the particle distribution in the duct transversal section, minimizing particles rope formation in the bottom of the duct. 47 1 88 100 Lun, C.K.K., Numerical simulation of dilute turbulent gas-solid flows (2000) Internacional Journal of Multiphase Flow, 26, pp. 1707-1736 Tsuji, Y., Morikawa, Y., Shiomi, H., LDV measurements of an airsolid two-phase flow in a vertical pipe (1984) J. Fluid Mech., 139, pp. 417-434 Akilli, H., Levy, E.K., Sahin, A., Gas-solid flow behavior in a horizontal pipe after a 90° vertical-to-horizontal elbow (2001) Powder Technology, 116, pp. 43-52 Nguyen, A.V., Fletcher, C.A.J., Particle interaction with the wall surface in two-phase gas-solid particle flow (1999) Internacional Journal of Multiphase Flow, 25, pp. 139-154 Gidaspow, D., (1994) Multiphase Flow and Fluidization. Ed., , Academic Press, San Diego - California Alves, J.J.N., Mori, M., Fluid dynamic modelling and simulation of circulating fluidized bed reactors: Analyses of particle phase stress models (1998) Computers Chem. Engng, 22 (SUPPL.), pp. 763-766 Massarani, G., (1997) Fluidodinâmica em Sistemas Particulados. Ed., , UFRJ, Rio de Janeiro - R.J Patankar, S.V., Spalding, D.B., A calculation procedure for heat transfer, mass and momentum tranfer in three-dimensional parabolic flows (1971) Int. Journal of Heat Mass Transfer, 15, pp. 1787-1806 Patankar, S.V., A calculation procedure for two-dimensional elliptic situations (1980) Numerical Heat Transfer, 4, pp. 409-425 Maliska, C.R., (1995) Transferência de Calor e Mecânica dos Fluidos Computacionais, , LTC editorta, Rio de Janeiro - RJ