In their initial form graphene is impermeable to slow moving atoms.
This study numerically evaluates the hydrodynamic drag force exerted on a porous sphere moving through a Newtonian fluid towards an impermeable flat plate at a Reynolds number ranging from 0.1 to 40.
If the water is moving through the ground, it could load up against some more impermeable material, like silt or clay, and cause liquefaction against that boundary, too.
As shown in Figure 12(b), the computing times obtained for applying LAS and SOLAS to Ex C scale with the number of cores quit similar to the factors observed for Ex B. However, the performance gain of moving from 16 cores to the GPU is less for the impermeable problem in Ex C, where the speedup factor is in the range 3.2-3.8 3.2-3.8
The story of the Crusades is told so often that we tend to forget those individuals, like the 16th-century traveler Leo Africanus, who, in Cannadine's words, "moved across the supposedly impermeable boundaries of religious identity with remarkable ease and frequency".
Assuming the two dimensional MHD laminar boundary layer heat and mass transfer flow past an impermeable stretching wedge with the influence of thermal radiation, heat generation and chemical reactionand moving with the velocity u w (x) in a nanofluid, and the free stream velocity is u e (x), where x is the coordinate measured along the surface of the wedge.
A constant moving crack in a magnetoelectroelastic material under in-plane mechanical, electric and magnetic loading is studied for impermeable crack surface boundary conditions.
To examine the effect of the air permeability of fabric on clothing ventilation, the ventilation rate of three suits with identical design but with different air permeability (air resistance: 0.3 and 20.5 kPand−1·m−1, and impermeable) was determined for subjects under the following conditions: standing still or walking, both in still air and in air moving at 1 m s−1.
(b) Observed speedup of LAS when moving from one ( t ( 1 ) ) to many ( t ( p ), p = 2, 4, 8, 16 ) cores, and for 16 cores relative to the GPU. Figure 12 Performance on the SandyBridge and K20 platforms for the example with impermeable barriers ( Ex C ).
