Dissipative particle dynamics modeling of low Reynolds number incompressible flows

Dissipative Particle Dynamics Modelling of Low Reynolds Number Incompressible Flows

Comparison of Body-fitted, Embedded and Immersed Solutions of Low Reynolds-number 3-d Incompressible Flows

The solutions obtained for low-Reynolds number incompressible flows using the same flow solver and solution technique on body-fitted, embedded surface and immersed body grids of similar size are compared. The cases considered are a sphere at Re = 100 and a stented aneurysm. It is found that the solutions using all of these techniques converge to the same grid-independent solution. On coarser gr...

Passive swimming in low-Reynolds-number flows.

The possibility of microscopic swimming by extraction of energy from an external flow is discussed, focusing on the migration of a simple trimer across a linear shear flow. The geometric properties of swimming, together with the possible generalization to the case of a vesicle, are analyzed. The mechanism of energy extraction from the flow appears to be the generalization to a discrete swimmer ...

Asymptotic Exponents from Low-Reynolds-Number Flows

The high-order statistics of fluctuations in velocity gradients in the crossover range from the inertial to the Kolmogorov and sub-Kolmogorov scales are studied by direct numerical simulations (DNS) of homogeneous isotropic turbulence with vastly improved resolution. The derivative moments for orders 0 ≤ n ≤ 8 are represented well as powers of the Reynolds number, Re, in the range 380 ≤ Re ≤ 22...

Complex magnetohydrodynamic low-Reynolds-number flows.

The interaction between electric currents and a magnetic field is used to produce body (Lorentz) forces in electrolyte solutions. By appropriate patterning of the electrodes, one can conveniently control the direction and magnitude of the electric currents and induce spatially and temporally complicated flow patterns. This capability is useful, not only for fundamental flow studies, but also fo...