In order to study the influence of position bulb on hydraulic performance a submersible tubular pump device, based large-scale pumping station, two schemes—involving front-mounted and rear-mounted bulb, respectively—were designed. The scheme uses GL-2008-03 model its conventional guide vane, while optimized design diffuser vane. method combining numerical simulation experimental testing was use...

0BAbstract: This article briefly introduce the current development progress status of high power high frequency power supply for esp of fujian longking, illustrating comparatively its application characteristics and putting emphasis upon discussing its application features in former electric fields with specific cases. Furthermore, it makes a study of the application of high frequency power sup...

The electro-osmotic flow driven by a screen pump, composed of a line array of evenly spaced identical rectangular solid blocks, is investigated under the Debye-Hückel approximation. The geometry of the screen pump is determined by the spacing and aspect ratio of the solid blocks. A constant surface zeta potential is assumed on the block surface. The method of eigenfunction series expansion is a...

As far as we know, there is no branch of industry where two-phase systems are not used. This the chemical, thermal, physical and finally oil industry. The process studying a hydromechanics reflects great scientific research works in recent times In work under review, main characteristics water-oil mixture were studied hydromechanical indicators this system determined. results conducted research...

The reducing in the pressure characteristic of submersible pump during operation occurs as a result combined action number reasons. Pumping equipment wears out due to waterjet destruction flow channels. characteristics pumps are captured at factory on special stands. At large group groundwater intakes, wells equipped with an automated control system that allows testing workplace and promptly ma...

Transepithelial potential (TEP) is the voltage across a polarized epithelium. In epithelia that have active transport functions, the force for transmembrane flux of an ion is dictated by the electrochemical gradient in which TEP plays an essential role. In epithelial injury, disruption of the epithelial barrier collapses the TEP at the wound edge, resulting in the establishment of an endogenous...