Boulders mixed with debris flows roll downstream under interactions flow slurry, which poses a great threat to the people, houses, bridges, and other infrastructure encountered during their movement. The catastrophic in Zhouqu County, occurred on 7 August 2010, was used as an example study motion accumulation characteristics of boulders flows. In this study, fluid–solid coupling model utilizing...

In nature, environmental and geophysical flows frequently encounter submerged cylindrical bodies on a rough bed. The around the bed are very complicated as flow field in these cases will be function of roughness apart from diameter cylinder velocity. addition, sand-bed has different effects compared to gravel-bed due differences heights. Therefore, main objective this article is compare mean ve...

submerged breakwaters are one of the shore protective structures. any discontinuity in these breakwaters causes changes on current parameters including speed and water surface profile. in this paper, discontinuous submerged breakwaters were modelled to investigate the changes in the wave and flow pattern.to investigate the phenomenon, three models including a shore with constant slope, a shore ...

the shape of a submerged vane is a major factor in the design of a vane system and affects the performance and secondary currents generated by the vanes. this study investigated the effect of five vane shapes on bed sediment processes (local scour at the leading edge and transverse distribution of sediment downstream of the vanes) at four flow intensities for a total of 20 experiments. the resu...

in river meandering, when flow passes through a bend, reduction of flow velocity and rising hydrostatic pressure cause super elevation phenomena at outer side and reduction of water surface at inner-side of the bend. a helical motion results, causing erosion of the outer side of the bend. installation of submerged vanes on the stream bed can reduce erosion of the outer bank significantly. in th...

Performance of Cordyceps militaris mutant obtained by high-energy ion beam irradiation regarding anti-cancer agent cordycepin production in submerged culture was investigated. It was established that the mutant renders a higher production performance in surface liquid culture, needs to observe its performance in submerged culture. Two kinds of media were used for submerged culture comprising a ...