Abstract
The approximate expressions obtained in Chap. 5 for the Navier–Stokes transport coefficients of granular mixtures are compared first in this chapter with controlled numerical simulations of certain specific situations. In particular, the tracer diffusion and shear viscosity coefficients are obtained by numerically solving the Boltzmann and Enskog kinetic equations by means of the Direct Simulation Monte Carlo method. As in the case of monocomponent granular fluids, comparison between theory and simulations shows a good agreement over a wide range of values of the coefficients of restitution, density, and the parameters of the mixture (masses and sizes). Once the reliability of the theoretical results is assessed, some interesting applications of the Navier–Stokes granular hydrodynamic equations will be considered. First, the violation of the Einstein relation between the diffusion and mobility coefficients in granular fluids is quantified. Analysis indicates that this violation is essentially due to two independent reasons: the cooling of the reference homogeneous cooling state and the occurrence of different temperatures for the particle and surrounding fluid. Since the constitutive equations for mass and heat fluxes in granular mixtures are different from those obtained for ordinary mixtures, the (possible) violation of Onsager’s reciprocal relations among various transport coefficients is also assessed. Additionally, as with single granular fluids, a linear stability analysis of the Navier–Stokes equations with respect to homogeneous cooling state is performed to identify the unstable hydrodynamic modes. Theoretical predictions for instability associated with transversal shear modes (velocity vortices) are compared against MD simulations for conditions of practical interest. Excellent agreement between theory and simulation is found when mechanical properties of particles are relatively similar, while only good agreement occurs for disparate-mass binary mixtures. Finally, the chapter ends with an analysis of thermal diffusion segregation. Special attention is paid to the tracer limit situation where a segregation criterion is explicitly derived to explain the transition between Brazil-nut effect \(\Leftrightarrow \) reverse Brazil-nut effect.
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References
Bird, G.A.: Molecular Gas Dynamics and the Direct Simulation Monte Carlo of Gas Flows. Clarendon, Oxford (1994)
Résibois, P., de Leener, M.: Classical Kinetic Theory of Fluids. Wiley, New York (1977)
Santos, A., Dufty, J.W.: Dynamics of a hard sphere granular impurity. Phys. Rev. Lett. 97, 058001 (2006)
Brey, J.J., Ruiz-Montero, M.J., Cubero, D., García-Rojo, R.: Self-diffusion in freely evolving granular gases. Phys. Fluids 12, 876–883 (2000)
McLennan, J.A.: Introduction to Nonequilibrium Statistical Mechanics. Prentice-Hall, New Jersey (1989)
Garzó, V., Montanero, J.M.: Diffusion of impurities in a granular gas. Phys. Rev. E 69, 021301 (2004)
Chapman, S., Cowling, T.G.: The Mathematical Theory of Nonuniform Gases. Cambridge University Press, Cambridge (1970)
Mason, E.A.: Transport properties of gases obeying a modified Buckingham potential. J. Chem. Phys. 22, 169–192 (1954)
López de Haro, M., Cohen, E.G.D.: The Enskog theory for multicomponent mixtures. III. Transport properties of dense binary mixtures with one tracer component. J. Chem. Phys. 80, 408–415 (1984)
Garzó, V., Vega Reyes, F.: Mass transport of impurities in a moderately dense granular gas. Phys. Rev. E 79, 041303 (2009)
Brilliantov, N.V., Pöschel, T.: Self-diffusion in granular gases. Phys. Rev. E 61, 1716–1721 (2000)
Garzó, V., Montanero, J.M.: Navier-Stokes transport coefficients of \(d\)-dimensional granular binary mixtures at low-density. J. Stat. Phys. 129, 27–58 (2007)
Montanero, J.M., Garzó, V.: Shear viscosity for a heated granular binary mixture at low density. Phys. Rev. E 67, 021308 (2003)
Garzó, V., Montanero, J.M.: Shear viscosity for a moderately dense granular binary mixture. Phys. Rev. E 68, 041302 (2003)
Montanero, J.M., Santos, A., Garzó, V.: DSMC evaluation of the Navier–Stokes shear viscosity of a granular fluid. In: Capitelli, M. (ed.) 24th International Symposium on Rarefied Gas Dynamics, vol. 762, pp. 797–802. AIP Conference Proceedings (2005)
Brey, J.J., Ruiz-Montero, M.J.: Simulation study of the Green-Kubo relations for dilute granular gases. Phys. Rev. E 70, 051301 (2004)
Dufty, J.W., Brey, J.J., Lutsko, J.F.: Diffusion in a granular fluid I. Theory. Phys. Rev. E 65, 051303 (2002)
Dufty, J.W., Garzó, V.: Mobility and diffusion in granular fluids. J. Stat. Phys. 105, 723–744 (2001)
Garzó, V., Hrenya, C.M., Dufty, J.W.: Enskog theory for polydisperse granular mixtures. II. Sonine polynomial approximation. Phys. Rev. E 76, 031304 (2007)
Garzó, V.: On the Einstein relation in a heated granular gas. Physica A 343, 105–126 (2004)
Garzó, V.: A note on the violation of the Einstein relation in a driven moderately dense granular gas. J. Stat. Mech. P05007 (2008)
Barrat, A., Loreto, V., Puglisi, A.: Temperature probes in binary granular gases. Physica A 66, 513–523 (2004)
Puglisi, A., Baldasarri, A., Vulpiani, A.: Violation of the Einstein relation in granular fluids: the role of correlations. J. Stat. Mech. P08016 (2007)
de Groot, S.R., Mazur, P.: Nonequilibrium Thermodynamics. Dover, New York (1984)
Mitrano, P.P., Garzó, V., Hrenya, C.M.: Instabilities in granular binary mixtures at moderate densities. Phys. Rev. E 89, 020201(R) (2014)
Garzó, V., Montanero, J.M., Dufty, J.W.: Mass and heat fluxes for a binary granular mixture at low density. Phys. Fluids 18, 083305 (2006)
Brey, J.J., Ruiz-Montero, M.J.: Shearing instability of a dilute granular mixture. Phys. Rev. E 87, 022210 (2013)
Garzó, V.: Stability of freely cooling granular mixtures at moderate densities. Chaos Solitons Fractals 81, 497–509 (2015)
Kudrolli, A.: Size separation in vibrated granular matter. Rep. Prog. Phys. 67, 209–247 (2004)
Daniels, K.E., Schröter, M.: Focus on granular segregation. New J. Phys. 15, 035017 (2013)
Rosato, A., Strandburg, K.J., Prinz, F., Swendsen, R.H.: Why the Brazil nuts are on top: size segregation of particulate matter by shaking. Phys. Rev. Lett. 58, 1038–1040 (1987)
Knight, J.B., Jaeger, H.M., Nagel, S.R.: Vibration-induced size separation in granular media: the convection connection. Phys. Rev. Lett. 70, 3728–3731 (1993)
Duran, J., Rajchenbach, J., Clément, E.: Arching effect model for particle size segregation. Phys. Rev. Lett. 70, 2431–2434 (1993)
Shinbrot, T., Muzzio, F.J.: Reverse buoyancy in shaken granular beds. Phys. Rev. Lett. 81, 4365–4368 (1998)
Hong, D.C., Quinn, P.V., Luding, S.: Reverse Brazil nut problem: competition between percolation and condensation. Phys. Rev. Lett. 86, 3423–3426 (2001)
Luding, S., Clément, E., Blumen, A., Rajchenbach, J., Duran, J.: Onset of convection in molecular dynamics simulations of grains. Phys. Rev. E 50, R1762–R1765 (1994)
Möbius, M.E., Lauderdale, B.E., Nagel, S.R., Jaeger, H.M.: Brazil-nut effect: size separation of granular particles. Nature 414, 270 (2001)
Goldhirsch, I., Ronis, D.: Theory of thermophoresis. I. General considerations and mode-coupling analysis. Phys. Rev. A 27, 1616–1634 (1983)
Goldhirsch, I., Ronis, D.: Theory of thermophoresis. II. Low-density behavior. Phys. Rev. A 27, 1635–1656 (1983)
Grew, K.E., Ibbs, T.L.: Thermal Diffusion in Gases. Cambridge University Press, Cambridge (1952)
Maitland, G.C., Rigby, M., Smith, E.B., Wakeham, W.A.: Intermolecular Forces: Their Origin and Determination. Clarendon, Oxford (1981)
Jenkins, J.T., Yoon, D.K.: Segregation in binary mixtures under gravity. Phys. Rev. Lett. 88, 194301 (2002)
Garzó, V.: Thermal diffusion segregation in granular binary mixtures described by the Enskog equation. New J. Phys. 13, 055020 (2011)
Serero, D., Goldhirsch, I., Noskowicz, S.H., Tan, M.L.: Hydrodynamics of granular gases and granular gas mixtures. J. Fluid Mech. 554, 237–258 (2006)
Serero, D., Noskowicz, S.H., Tan, M.L., Goldhirsch, I.: Binary granular gas mixtures: theory, layering effects and some open questions. Eur. Phys. J. Spec. Top. 179, 221–247 (2009)
Brito, R., Enríquez, H., Godoy, S., Soto, R.: Segregation induced by inelasticity in a vibrofluidized granular mixture. Phys. Rev. E 77, 061301 (2008)
Brito, R., Soto, R.: Competition of Brazil nut effect, buoyancy, and inelasticity induced segregation in a granular mixture. Eur. Phys. J. Spec. Top. 179, 207–219 (2009)
Brey, J.J., Ruiz-Montero, M.J., Moreno, F.: Energy partition and segregation for an intruder in a vibrated granular system under gravity. Phys. Rev. Lett. 95, 098001 (2005)
Brey, J.J., Ruiz-Montero, M.J., Moreno, F.: Hydrodynamic profiles for an impurity in an open vibrated granular gas. Phys. Rev. E 73, 031301 (2006)
Garzó, V.: Segregation in granular binary mixtures: thermal diffusion. Europhys. Lett. 75, 521–527 (2006)
Arnarson, B., Willits, J.T.: Thermal diffusion in binary mixtures of smooth, nearly elastic spheres with and without gravity. Phys. Fluids 10, 1324–1328 (1998)
Yoon, D.K., Jenkins, J.T.: The influence of different species’ granular temperatures on segregation in a binary mixture of dissipative grains. Phys. Fluids 18, 073303 (2006)
Garzó, V.: Segregation by thermal diffusion in moderately dense granular mixtures. Eur. Phys. J. E 29, 261–274 (2009)
Schröter, M., Ulrich, S., Kreft, J., Swift, J.B., Swinney, H.L.: Mechanisms in the size segregation of a binary granular mixture. Phys. Rev. E 74, 011307 (2006)
Galvin, J.E., Dahl, S.R., Hrenya, C.M.: On the role of non-equipartition in the dynamics of rapidly flowing granular mixtures. J. Fluid Mech. 528, 207–232 (2005)
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Garzó, V. (2019). Navier–Stokes Transport Coefficients for Multicomponent Granular Gases. II. Simulations and Applications. In: Granular Gaseous Flows. Soft and Biological Matter. Springer, Cham. https://doi.org/10.1007/978-3-030-04444-2_6
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