WebThe apparent permeability index is widely used as part of a general screening process to study drug absorption, and is routinely obtained from in vitro or ex vivo experiments. A classical example, widely used in the pharmaceutical industry, is the in vitro Caco-2 cell culture model. ... This new index characterizes the intrinsic permeability of ... Webwhere k is the intrinsic permeability to liquid flow, r is the characteristic radius of the capillary apertures of the media, λ is the mean free path length of the gas molecules, and c is the proportionality factor between the mean free path for the gas compared to the mean free path for gas which just collided with the capillary wall (c is ...
A study of the intrinsic permeability of granite to gas
WebFeb 1, 1995 · The results with either gas are highly similar without, however, exactly coinciding. This should be the case, since per- meability is an intrinsic coefficient. The intrinsic nature of K was observed in numerous cases, e.g. by comparing the permeability to water or to gas of concrete specimens. Web2 days ago · The corresponding reservoir porosity is 34.5%, and the average intrinsic permeability is speculated to be approximately 0.22 mD [49]. However, the recent investigation shows that the average grain size, foraminiferal abundance, porosity and silt content at site W11 in the GHBS sections are similar to those at sites SH2 and SH7 … breath of heaven amy grant youtube
Permeation - Wikipedia
WebSep 1, 2024 · The intrinsic permeability expression implied by fib Model Code 2010 [8] has been shown to provide a suitable and conservatively low estimate for concrete of compressive strength greater than 35 MPa. For lower concrete grades, the intrinsic permeability appears to be exceedingly overestimated. Although spalling susceptibility is … WebFeb 1, 2024 · The intrinsic permeability depends primarily on the geometric properties of the particles and pores, which are usually represented by the particle size and porosity … WebSep 9, 2015 · Permeability is an intrinsic property of porous materials and governs the ease with which fluids move through hydrocarbon reservoirs, aquifers, gravel packs and filters. Figure 1. The importance of connectivity. Connected pores (green) give rock its permeability, allowing fluid to flow (black arrows). breath of heaven bible verse