منابع مشابه
Chains of magnetic particles in elongational flow
The rheology of a dilute suspension of chains of magnetic particles is being studied in order to elucidate the effect of the dipolar magnetic interactions on the chains’ contribution to the pressure tensor and to the viscosities of the suspension. Depending upon the nature of the elongational flow, the rigid chain-limiting behavior of the pressure tensor as well as that of the elongational, she...
متن کاملUnfolding Kinetics of a Wormlike Chain under Elongational Flow
A simple theory of the unfolding kinetics of a semi-flexible polymer chain is presented in terms of a Kramers type picture for the energy of elongation. The hydrodynamic interactions are discussed in terms of slender body theory. It turns out that the elongation of the chain is basically linear in time and independent of the viscosity. The former prediction agrees with experiments on the stretc...
متن کاملEffect of elongational flow on ferrofuids under a magnetic field.
To set up a mathematical model for the flow of complex magnetic fluids, noninteracting magnetic particles with a small volume or an even point size are typically assumed. Real ferrofluids, however, consist of a suspension of particles with a finite size in an almost ellipsoid shape as well as with particle-particle interactions that tend to form chains of various lengths. To come close to the r...
متن کاملSqueezing and Elongational Flow
1. Squeezing and Elongational Flow in Fluid Foods 2. Foundations of Squeezing Flow Viscometry 2.1. Elongational Flow: Lubricated Squeezing Flow Kinematics 2.2. Shear Flow: Non-lubricated Squeezing Flow Kinematics 3. Parallel Plates Viscometer 3.1. Lubricated Squeezing Flow 3.2. Non-lubricated Squeezing Flow 3.3. Applications 3.4. Shortcomings 3.5. Other Configurations 4. Concluding Remarks and ...
متن کاملKinetic growth of field-oriented chains in dipolar colloidal solutions
Experimental studies on the irreversible growth of field-induced chains of dipolar particles suggest an asymptotic power-law behavior of several relevant quantities. We introduce a Monte Carlo model of chain growth that explicitly incorporates the anisotropic diffusion characteristic of a rodlike object. Assuming a simple power-law form for the mean cluster size S(t);t, the results of our model...
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ژورنال
عنوان ژورنال: The Journal of Chemical Physics
سال: 1999
ISSN: 0021-9606,1089-7690
DOI: 10.1063/1.478503