Abstract
We have conducted a DNS study of dilute turbulent particulate flow in a vertical plane channel, considering up to 8192 finite-size rigid particles with numerically resolved phase interfaces. The particle diameter corresponds to approximately 9 wall units and their terminal Reynolds number is set to 136. The fluid flow with bulk Reynolds number 2700 is directed upward, which maintains the particles suspended upon average. Two different density ratios were simulated, varying by a factor of 4.5. The corresponding Stokes numbers of the two particles were O(10) in the near-wall region and O(1) in the outer flow. We have observed the formation of large-scale elongated streak-like structures with streamwise dimensions of the order of 8 channel half-widths and cross-stream dimensions of the order of one half-width. At the same time, we have found no evidence of significant formation of particle clusters, which suggests that the large structures are due to an mtxinsic instability of the flow, triggered by the presence of the particles. It was found that the mean flow velocity profile tends towards a concave shape, and the turbulence intensity as well as the normal stress anisotropy are strongly increased. The effect of varying the Stokes number while keeping the buoyancy, particle size and volume fraction constant was relatively weak. More details about part of this work can be found in (2008).
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References
Ahmed, A.M. and Elgobashi, S.: Phys. Fluids 13(11) (2001), pp.3346–3364.
Ding, E.J, and Aidun, C.K.: J. Fluid Mech 423 (2000), pp.317–344.
Elgobashi, S.: Appl. Sei. Res. 52 (1994), pp.309–329.
Fadlun, E.A., Verzicco, R., Orlandi, P. and Mohd-Yusof, J.: Comput. Phys. 161 (2000), pp. 35–60.
Glowinsky, R., Pan, T.W., Hesla, T.I. and Joseph, D.D.: Int. J. Multiphase Flow 25 (1999), pp. 755–794.
Goldstein, D., Handler, R. and Sirovich, L.: J. Comput. Phys. 105 (1993), pp. 354–366.
Höfler, K. and Schwarzer, S.: Phys. Rev. E. 61 (2000), pp 7146–7160.
Kajishima, T., Takiguchi, H., Hamasaki, H. and Miyake, Y.: JSME Int. J. Series B 44 (2001), pp.526–535.
Kajishima, T., and Takiguchi, H.: Int. J. Heat Fluid Flow 23 (2002), pp.639–646.
Kajishima, T. (2004). Numerical Investigation of Collective Behavior of Gravitationally Settling Particles in a Homogeneous Field. 5th Int. Conf. Multiphase Flows.
Kim, J., Kim, D. and Choi, H.: J. Comput. Phys. 171 (2001), pp. 132–150.
Kim, J., Moin, P. and Moser, R.: J. Fluid Mech. 177 (1987), pp.133–166.
Kulick, J.D., Fessier, J. R. and Eaton, J. K.: J. Fluid. Mech. 277 (1994), pp.109–134.
Lai, M.-C, Peskin, C.S.: J. Comput. Phys. 160 (2000), pp. 705–719.
Melheim, J.A.: Comput. Phys. Commun. 171(3) (2005), pp.155–161.
Nishino K. and Matsushita, H. (2004). Columnar Particle Accumulation in Homogenoeus Turbulence. 5th Int. Conf. Multiphase Flows.
Peskin, C.S.: ActaNumerica 11 (2002), pp. 479–517.
Peskin, C.S. (1972). Flow Patterns around Heart Valves. PhD Thesis, A. Einstein College of Medicine.
Roma, A.M., Peskin, C.S. and Berger, M.J.: J. Comput. Phys. 153 (1999), pp. 509–534.
Suzuki, Y., Dcenoya, M. and Kasagi, N.: 29 Experiments in Fluids.(2000), pp. S185–S193.
Tsuji, Y., Morikawa, Y. and Shiomi, H.: J. Fluid Mech. 139 (1984), pp.417–434.
Uhlmann, M. (2004). New Results on the Simulation of Particulate Flow. CIEMAT Tech. Report 1083.
Uhlmann, M.: J. Comput. Phys. 209(2) (2005), pp. 448–476..
Uhlmann, M. (2005b). An Improved Solid Fluid Coupling Method for DNS of Particulate Flow on a Fixed Mesh. 11th Workshop Two-Phase Flows.
Uhlmann, M. (2006). Experience with DNS of Particulate Flow using a Variant of the Immersed Boundary Method. ECCOMAS CFD.
Uhlmann, M.: Phys. Fluids 20(05) (2008), pp. 3305–3332.
Wylie, J.J. and Koch, D.L.: Phys. Fluids: 12(5) (2000), pp.964–970.
Yang, B.H., Wang, J., Joseph, D.D., Hu, T., Pan, T.W. and Glowinski, R.: J. Fluid Mech. 540 (2005), pp.109–131.
Zettner, CM. and Yoda, M.: J. Fluid Mech. 442 (2001), pp.241–266.
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© 2009 Tsinghua University Press, Beijing and Springer-Verlag Berlin Heidelberg
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Uhlmann, M., Pinelli, A. (2009). Direct Numerical Simulation of Vertical Particulate Channel Flow in the Turbulent Regime. In: Yue, G., Zhang, H., Zhao, C., Luo, Z. (eds) Proceedings of the 20th International Conference on Fluidized Bed Combustion. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-02682-9_8
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DOI: https://doi.org/10.1007/978-3-642-02682-9_8
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