Granular dynamics simulations have been carried out of vertical feed two-dimensional heap formation by a freefall method using a more realistic granule interaction law than has been employed in previous studies to permit prolonged contacts between adjacent granules. Stable heaps are found to form only on a geometrically rough base comprised of discrete particles, and heap formation is only weak...

The study of flooding gas condensate reservoirs at different stages depletion (25, 50, 75% the dew point pressure and maximum condensation pressure) with potential hydrocarbon content 100, 300 500 g/m 3 voidage replacement by using injection (50, 100 150%). results showed a positive effect water on increase recovery factor, but decrease in production compared to basic options development drive....

The microgravity experienced during space flight induces physiological changes that affect astronauts' health and performance. Simulations such as prolonged bed rest can mimic some of these changes and provide study conditions that are more accessible than during space flight itself. Previous studies, including several long and short-term bed-rest campaigns supported by ESA, have yielded signif...

The optimized blast furnace design is the prerequisite for low-carbon smelting. salamander depth and bosh angle are key parameters, which determine longevity. In this paper, physical mathematical force model of deadman cooling stave was established. relationship between operating parameters depth, as well angle, analysed, gas flow scouring curve proposed. following results were obtained: first,...

in a novel dual bed reactor fischer-tropsch synthesis was studied by using two diffrent cobalt catalysts. an alkali-promoted cobalt catalyst was used in the first bed of a fixed-bed reactor followed by a rutenuim promoted cobalt catalyst in the second bed. the activity, product selectivity and accelerated deactivation of the system were assessed and compared with a conventional single bed react...