Journal ArticleDOI
Calculation of the resistance and mobility functions for two unequal rigid spheres in low-Reynolds-number flow
David J. Jeffrey,Y. Onishi +1 more
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Two unequal rigid spheres are immersed in unbounded fluid and are acted on by externally applied forces and couples, which can be described by a set of linear relations between, on the one hand, the forces and spouses exerted by the spheres on the fluid and the translational and rotational velocities of the spheres.Abstract:
Two unequal rigid spheres are immersed in unbounded fluid and are acted on by externally applied forces and couples. The Reynolds number of the flow around them is assumed to be small, with the consequence that the hydrodynamic interactions between the spheres can be described by a set of linear relations between, on the one hand, the forces and couples exerted by the spheres on the fluid and, on the other, the translational and rotational velocities of the spheres. These relations may be represented completely by either a set of 10 resistance functions or a set of 10 mobility functions. When non-dimensionalized, each function depends on two variables, the non-dimensionalized centre-to-centre separation s and the ratio of the spheres’ radii λ. Two expressions are given for each function, one a power series in s−1 and the other an asymptotic expression valid when the spheres are close to touching.read more
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Lattice-Boltzmann Simulations of Particle-Fluid Suspensions
Anthony J. C. Ladd,Rolf Verberg +1 more
TL;DR: In this paper, a review of applications of the lattice-Boltzmann method to simulations of particle-fluid suspensions is presented, together with some of the important applications of these methods.
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Dynamic simulation of hydrodynamically interacting particles
TL;DR: In this article, a general method for computing the hydrodynamic interactions among N suspended particles, under the condition of vanishingly small particle Reynolds number, is presented, which accounts for both near-field lubrication effects and the dominant many-body interactions.
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The rheology of concentrated suspensions of spheres in simple shear flow by numerical simulation
John F. Brady,Georges Bossis +1 more
TL;DR: In this paper, the Stokesian dynamics is used to investigate the rheological behavior of concentrated suspensions in a simple shear flow, and the simulation results suggest that the suspension viscosity becomes infinite at the percolation-like threshold ϕm owing to the formation of an infinite cluster.
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Accelerated Stokesian Dynamics simulations
Asimina Sierou,John F. Brady +1 more
TL;DR: In this paper, an accelerated Stokesian Dynamics (ASD) algorithm was proposed to solve all hydrodynamic interactions in a viscous fluid at low particle Reynolds number with a significantly lower computational cost of O(N ln N).
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Shear thickening, frictionless and frictional rheologies in non-Brownian suspensions
TL;DR: In this paper, Seto et al. investigated the effect of friction on shear thickening and found frictional contact forces to be essential and were able to reproduce the experimental behavior by a simulation including this physical ingredient along with viscous lubrication.
References
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Book
Low Reynolds number hydrodynamics
John Happel,Howard Brenner +1 more
TL;DR: Low Reynolds number flow theory finds wide application in such diverse fields as sedimentation, fluidization, particle-size classification, dust and mist collection, filtration, centrifugation, polymer and suspension rheology, and a host of other disciplines.
Journal ArticleDOI
Brownian diffusion of particles with hydrodynamic interaction
TL;DR: In this paper, it is shown that the particle flux in probability space due to Brownian motion is the same as that which would be produced by the application of a certain "thermodynamic" force to each particle.
Journal ArticleDOI
Conduction through a random suspension of spheres
TL;DR: In this paper, the conduction of heat through a stationary random suspension of spheres is studied for a volume fraction of the spheres (c) which is small, and the work of Maxwell (1873) is extended to calculate the flux of heat exactly to order c 2 by using the method of Batchelor (1972), which reduces the problem to a consideration of interactions between pairs of spheres while avoiding the usual convergence difficulties.